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Finding the Fourth Proportional to 91,363.68, 136,952.70 and 61,784.88

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Solution

The fourth proportional to 91,363.68, 136,952.70 and 61,784.88 is: 92,614.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,363.68 : 136,952.70 = 61,784.88 : x
  2. Step 2: Convert to fraction form
    91,363.68/136,952.70 = 61,784.88/x
  3. Step 3: Cross multiply
    91,363.68x = 136,952.70 × 61,784.88
  4. Step 4: Simplify right side
    91,363.68x = 8,461,606,135.18
  5. Step 5: Solve for x
    x = 8,461,606,135.18/91,363.68
  6. Step 6: Final answer
    x = 92,614.55

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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.