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Finding the Fourth Proportional to 60,487.32, 90,749.42 and 30,925.90

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Solution

The fourth proportional to 60,487.32, 90,749.42 and 30,925.90 is: 46,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,487.32 : 90,749.42 = 30,925.90 : x
  2. Step 2: Convert to fraction form
    60,487.32/90,749.42 = 30,925.90/x
  3. Step 3: Cross multiply
    60,487.32x = 90,749.42 × 30,925.90
  4. Step 4: Simplify right side
    60,487.32x = 2,806,507,487.98
  5. Step 5: Solve for x
    x = 2,806,507,487.98/60,487.32
  6. Step 6: Final answer
    x = 46,398.28

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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.