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Finding the Fourth Proportional to 106,962.78, 147,624.08 and 61,632.08

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Solution

The fourth proportional to 106,962.78, 147,624.08 and 61,632.08 is: 85,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,962.78 : 147,624.08 = 61,632.08 : x
  2. Step 2: Convert to fraction form
    106,962.78/147,624.08 = 61,632.08/x
  3. Step 3: Cross multiply
    106,962.78x = 147,624.08 × 61,632.08
  4. Step 4: Simplify right side
    106,962.78x = 9,098,379,108.49
  5. Step 5: Solve for x
    x = 9,098,379,108.49/106,962.78
  6. Step 6: Final answer
    x = 85,061.17

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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.