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Finding the Fourth Proportional to 88,916.42, 133,468.61 and 86,908.52

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Solution

The fourth proportional to 88,916.42, 133,468.61 and 86,908.52 is: 130,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,916.42 : 133,468.61 = 86,908.52 : x
  2. Step 2: Convert to fraction form
    88,916.42/133,468.61 = 86,908.52/x
  3. Step 3: Cross multiply
    88,916.42x = 133,468.61 × 86,908.52
  4. Step 4: Simplify right side
    88,916.42x = 11,599,558,259.67
  5. Step 5: Solve for x
    x = 11,599,558,259.67/88,916.42
  6. Step 6: Final answer
    x = 130,454.63

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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.