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Finding the Fourth Proportional to 78,864.74, 108,842.89 and 44,881.49

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Solution

The fourth proportional to 78,864.74, 108,842.89 and 44,881.49 is: 61,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,864.74 : 108,842.89 = 44,881.49 : x
  2. Step 2: Convert to fraction form
    78,864.74/108,842.89 = 44,881.49/x
  3. Step 3: Cross multiply
    78,864.74x = 108,842.89 × 44,881.49
  4. Step 4: Simplify right side
    78,864.74x = 4,885,031,323.16
  5. Step 5: Solve for x
    x = 4,885,031,323.16/78,864.74
  6. Step 6: Final answer
    x = 61,941.89

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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.