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Finding the Fourth Proportional to 415,522.10, 623,283.15 and 344,663.30

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Solution

The fourth proportional to 415,522.10, 623,283.15 and 344,663.30 is: 516,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,522.10 : 623,283.15 = 344,663.30 : x
  2. Step 2: Convert to fraction form
    415,522.10/623,283.15 = 344,663.30/x
  3. Step 3: Cross multiply
    415,522.10x = 623,283.15 × 344,663.30
  4. Step 4: Simplify right side
    415,522.10x = 214,822,827,313.40
  5. Step 5: Solve for x
    x = 214,822,827,313.40/415,522.10
  6. Step 6: Final answer
    x = 516,994.95

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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.