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Finding the Fourth Proportional to 112,956.66, 155,877.81 and 62,655.22

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Solution

The fourth proportional to 112,956.66, 155,877.81 and 62,655.22 is: 86,462.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,956.66 : 155,877.81 = 62,655.22 : x
  2. Step 2: Convert to fraction form
    112,956.66/155,877.81 = 62,655.22/x
  3. Step 3: Cross multiply
    112,956.66x = 155,877.81 × 62,655.22
  4. Step 4: Simplify right side
    112,956.66x = 9,766,558,478.67
  5. Step 5: Solve for x
    x = 9,766,558,478.67/112,956.66
  6. Step 6: Final answer
    x = 86,462.88

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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.