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Finding the Fourth Proportional to 539,374.90, 809,062.35 and 477,166.90

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Solution

The fourth proportional to 539,374.90, 809,062.35 and 477,166.90 is: 715,750.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,374.90 : 809,062.35 = 477,166.90 : x
  2. Step 2: Convert to fraction form
    539,374.90/809,062.35 = 477,166.90/x
  3. Step 3: Cross multiply
    539,374.90x = 809,062.35 × 477,166.90
  4. Step 4: Simplify right side
    539,374.90x = 386,057,773,456.22
  5. Step 5: Solve for x
    x = 386,057,773,456.22/539,374.90
  6. Step 6: Final answer
    x = 715,750.35

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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.