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Finding the Fourth Proportional to 78,886.71, 108,864.26 and 44,897.79

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Solution

The fourth proportional to 78,886.71, 108,864.26 and 44,897.79 is: 61,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,886.71 : 108,864.26 = 44,897.79 : x
  2. Step 2: Convert to fraction form
    78,886.71/108,864.26 = 44,897.79/x
  3. Step 3: Cross multiply
    78,886.71x = 108,864.26 × 44,897.79
  4. Step 4: Simplify right side
    78,886.71x = 4,887,763,915.18
  5. Step 5: Solve for x
    x = 4,887,763,915.18/78,886.71
  6. Step 6: Final answer
    x = 61,959.28

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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.