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Finding the Fourth Proportional to 122,068.91, 168,472.16 and 88,187.01

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Solution

The fourth proportional to 122,068.91, 168,472.16 and 88,187.01 is: 121,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,068.91 : 168,472.16 = 88,187.01 : x
  2. Step 2: Convert to fraction form
    122,068.91/168,472.16 = 88,187.01/x
  3. Step 3: Cross multiply
    122,068.91x = 168,472.16 × 88,187.01
  4. Step 4: Simplify right side
    122,068.91x = 14,857,055,617.71
  5. Step 5: Solve for x
    x = 14,857,055,617.71/122,068.91
  6. Step 6: Final answer
    x = 121,710.40

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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.