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Finding the Fourth Proportional to 607,712.70, 910,840.05 and 252,543.90

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Solution

The fourth proportional to 607,712.70, 910,840.05 and 252,543.90 is: 378,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,712.70 : 910,840.05 = 252,543.90 : x
  2. Step 2: Convert to fraction form
    607,712.70/910,840.05 = 252,543.90/x
  3. Step 3: Cross multiply
    607,712.70x = 910,840.05 × 252,543.90
  4. Step 4: Simplify right side
    607,712.70x = 230,027,098,503.20
  5. Step 5: Solve for x
    x = 230,027,098,503.20/607,712.70
  6. Step 6: Final answer
    x = 378,512.90

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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.