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Finding the Fourth Proportional to 623,919.40, 935,879.10 and 476,463.40

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Solution

The fourth proportional to 623,919.40, 935,879.10 and 476,463.40 is: 714,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,919.40 : 935,879.10 = 476,463.40 : x
  2. Step 2: Convert to fraction form
    623,919.40/935,879.10 = 476,463.40/x
  3. Step 3: Cross multiply
    623,919.40x = 935,879.10 × 476,463.40
  4. Step 4: Simplify right side
    623,919.40x = 445,912,137,974.94
  5. Step 5: Solve for x
    x = 445,912,137,974.94/623,919.40
  6. Step 6: Final answer
    x = 714,695.10

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Half scale
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Double scale
Find fourth proportional to 623,920.40, 935,880.60 and 476,464.40
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.