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Finding the Fourth Proportional to 572,539.60, 858,809.40 and 292,020.40

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Solution

The fourth proportional to 572,539.60, 858,809.40 and 292,020.40 is: 438,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,539.60 : 858,809.40 = 292,020.40 : x
  2. Step 2: Convert to fraction form
    572,539.60/858,809.40 = 292,020.40/x
  3. Step 3: Cross multiply
    572,539.60x = 858,809.40 × 292,020.40
  4. Step 4: Simplify right side
    572,539.60x = 250,789,864,511.76
  5. Step 5: Solve for x
    x = 250,789,864,511.76/572,539.60
  6. Step 6: Final answer
    x = 438,030.60

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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.