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Finding the Fourth Proportional to 318,357.59, 477,372.05 and 93,688.85

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Solution

The fourth proportional to 318,357.59, 477,372.05 and 93,688.85 is: 140,484.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,357.59 : 477,372.05 = 93,688.85 : x
  2. Step 2: Convert to fraction form
    318,357.59/477,372.05 = 93,688.85/x
  3. Step 3: Cross multiply
    318,357.59x = 477,372.05 × 93,688.85
  4. Step 4: Simplify right side
    318,357.59x = 44,724,436,777.74
  5. Step 5: Solve for x
    x = 44,724,436,777.74/318,357.59
  6. Step 6: Final answer
    x = 140,484.91

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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.