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Finding the Fourth Proportional to 91,258.86, 136,888.29 and 59,695.46

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Solution

The fourth proportional to 91,258.86, 136,888.29 and 59,695.46 is: 89,543.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,258.86 : 136,888.29 = 59,695.46 : x
  2. Step 2: Convert to fraction form
    91,258.86/136,888.29 = 59,695.46/x
  3. Step 3: Cross multiply
    91,258.86x = 136,888.29 × 59,695.46
  4. Step 4: Simplify right side
    91,258.86x = 8,171,609,440.16
  5. Step 5: Solve for x
    x = 8,171,609,440.16/91,258.86
  6. Step 6: Final answer
    x = 89,543.19

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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.