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Finding the Fourth Proportional to 623,867.40, 935,801.10 and 476,411.40

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Solution

The fourth proportional to 623,867.40, 935,801.10 and 476,411.40 is: 714,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,867.40 : 935,801.10 = 476,411.40 : x
  2. Step 2: Convert to fraction form
    623,867.40/935,801.10 = 476,411.40/x
  3. Step 3: Cross multiply
    623,867.40x = 935,801.10 × 476,411.40
  4. Step 4: Simplify right side
    623,867.40x = 445,826,312,172.54
  5. Step 5: Solve for x
    x = 445,826,312,172.54/623,867.40
  6. Step 6: Final answer
    x = 714,617.10

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Half scale
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Double scale
Find fourth proportional to 623,868.40, 935,802.60 and 476,412.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.