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Finding the Fourth Proportional to 191,223.04, 286,965.24 and 66,564.04

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Solution

The fourth proportional to 191,223.04, 286,965.24 and 66,564.04 is: 99,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,223.04 : 286,965.24 = 66,564.04 : x
  2. Step 2: Convert to fraction form
    191,223.04/286,965.24 = 66,564.04/x
  3. Step 3: Cross multiply
    191,223.04x = 286,965.24 × 66,564.04
  4. Step 4: Simplify right side
    191,223.04x = 19,101,565,713.97
  5. Step 5: Solve for x
    x = 19,101,565,713.97/191,223.04
  6. Step 6: Final answer
    x = 99,891.55

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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.