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Finding the Fourth Proportional to 318,369.48, 477,389.88 and 93,700.80

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Solution

The fourth proportional to 318,369.48, 477,389.88 and 93,700.80 is: 140,502.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,369.48 : 477,389.88 = 93,700.80 : x
  2. Step 2: Convert to fraction form
    318,369.48/477,389.88 = 93,700.80/x
  3. Step 3: Cross multiply
    318,369.48x = 477,389.88 × 93,700.80
  4. Step 4: Simplify right side
    318,369.48x = 44,731,813,667.90
  5. Step 5: Solve for x
    x = 44,731,813,667.90/318,369.48
  6. Step 6: Final answer
    x = 140,502.83

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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.