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Finding the Fourth Proportional to 539,753.60, 744,590.93 and 321,808.56

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Solution

The fourth proportional to 539,753.60, 744,590.93 and 321,808.56 is: 443,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,753.60 : 744,590.93 = 321,808.56 : x
  2. Step 2: Convert to fraction form
    539,753.60/744,590.93 = 321,808.56/x
  3. Step 3: Cross multiply
    539,753.60x = 744,590.93 × 321,808.56
  4. Step 4: Simplify right side
    539,753.60x = 239,615,733,363.32
  5. Step 5: Solve for x
    x = 239,615,733,363.32/539,753.60
  6. Step 6: Final answer
    x = 443,935.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.