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Finding the Fourth Proportional to 623,496.30, 935,244.45 and 445,620.30

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Solution

The fourth proportional to 623,496.30, 935,244.45 and 445,620.30 is: 668,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,496.30 : 935,244.45 = 445,620.30 : x
  2. Step 2: Convert to fraction form
    623,496.30/935,244.45 = 445,620.30/x
  3. Step 3: Cross multiply
    623,496.30x = 935,244.45 × 445,620.30
  4. Step 4: Simplify right side
    623,496.30x = 416,763,912,382.34
  5. Step 5: Solve for x
    x = 416,763,912,382.34/623,496.30
  6. Step 6: Final answer
    x = 668,430.45

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Half scale
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Double scale
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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.