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Finding the Fourth Proportional to 84,646.61, 127,011.51 and 34,043.61

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Solution

The fourth proportional to 84,646.61, 127,011.51 and 34,043.61 is: 51,082.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,646.61 : 127,011.51 = 34,043.61 : x
  2. Step 2: Convert to fraction form
    84,646.61/127,011.51 = 34,043.61/x
  3. Step 3: Cross multiply
    84,646.61x = 127,011.51 × 34,043.61
  4. Step 4: Simplify right side
    84,646.61x = 4,323,930,311.95
  5. Step 5: Solve for x
    x = 4,323,930,311.95/84,646.61
  6. Step 6: Final answer
    x = 51,082.15

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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.