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Finding the Fourth Proportional to 72,696.30, 108,876.78 and 63,088.08

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Solution

The fourth proportional to 72,696.30, 108,876.78 and 63,088.08 is: 94,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,696.30 : 108,876.78 = 63,088.08 : x
  2. Step 2: Convert to fraction form
    72,696.30/108,876.78 = 63,088.08/x
  3. Step 3: Cross multiply
    72,696.30x = 108,876.78 × 63,088.08
  4. Step 4: Simplify right side
    72,696.30x = 6,868,827,006.78
  5. Step 5: Solve for x
    x = 6,868,827,006.78/72,696.30
  6. Step 6: Final answer
    x = 94,486.61

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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.