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Finding the Fourth Proportional to 119,390.64, 164,703.84 and 71,560.98

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Solution

The fourth proportional to 119,390.64, 164,703.84 and 71,560.98 is: 98,721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,390.64 : 164,703.84 = 71,560.98 : x
  2. Step 2: Convert to fraction form
    119,390.64/164,703.84 = 71,560.98/x
  3. Step 3: Cross multiply
    119,390.64x = 164,703.84 × 71,560.98
  4. Step 4: Simplify right side
    119,390.64x = 11,786,368,200.16
  5. Step 5: Solve for x
    x = 11,786,368,200.16/119,390.64
  6. Step 6: Final answer
    x = 98,721.04

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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.