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Finding the Fourth Proportional to 91,156.66, 136,749.60 and 38,566.60

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Solution

The fourth proportional to 91,156.66, 136,749.60 and 38,566.60 is: 57,856.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,156.66 : 136,749.60 = 38,566.60 : x
  2. Step 2: Convert to fraction form
    91,156.66/136,749.60 = 38,566.60/x
  3. Step 3: Cross multiply
    91,156.66x = 136,749.60 × 38,566.60
  4. Step 4: Simplify right side
    91,156.66x = 5,273,966,781.49
  5. Step 5: Solve for x
    x = 5,273,966,781.49/91,156.66
  6. Step 6: Final answer
    x = 57,856.08

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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.