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Finding the Fourth Proportional to 70,892.66, 97,831.80 and 39,061.56

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Solution

The fourth proportional to 70,892.66, 97,831.80 and 39,061.56 is: 53,904.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,892.66 : 97,831.80 = 39,061.56 : x
  2. Step 2: Convert to fraction form
    70,892.66/97,831.80 = 39,061.56/x
  3. Step 3: Cross multiply
    70,892.66x = 97,831.80 × 39,061.56
  4. Step 4: Simplify right side
    70,892.66x = 3,821,462,725.61
  5. Step 5: Solve for x
    x = 3,821,462,725.61/70,892.66
  6. Step 6: Final answer
    x = 53,904.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.