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Finding the Fourth Proportional to 143,965.48, 215,959.02 and 65,124.04

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Solution

The fourth proportional to 143,965.48, 215,959.02 and 65,124.04 is: 97,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,965.48 : 215,959.02 = 65,124.04 : x
  2. Step 2: Convert to fraction form
    143,965.48/215,959.02 = 65,124.04/x
  3. Step 3: Cross multiply
    143,965.48x = 215,959.02 × 65,124.04
  4. Step 4: Simplify right side
    143,965.48x = 14,064,123,856.84
  5. Step 5: Solve for x
    x = 14,064,123,856.84/143,965.48
  6. Step 6: Final answer
    x = 97,690.95

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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.