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Finding the Fourth Proportional to 123,487.44, 185,315.29 and 56,928.12

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Solution

The fourth proportional to 123,487.44, 185,315.29 and 56,928.12 is: 85,430.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,487.44 : 185,315.29 = 56,928.12 : x
  2. Step 2: Convert to fraction form
    123,487.44/185,315.29 = 56,928.12/x
  3. Step 3: Cross multiply
    123,487.44x = 185,315.29 × 56,928.12
  4. Step 4: Simplify right side
    123,487.44x = 10,549,650,549.92
  5. Step 5: Solve for x
    x = 10,549,650,549.92/123,487.44
  6. Step 6: Final answer
    x = 85,430.96

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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.