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Finding the Fourth Proportional to 84,816.54, 127,031.02 and 40,474.42

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Solution

The fourth proportional to 84,816.54, 127,031.02 and 40,474.42 is: 60,619.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,816.54 : 127,031.02 = 40,474.42 : x
  2. Step 2: Convert to fraction form
    84,816.54/127,031.02 = 40,474.42/x
  3. Step 3: Cross multiply
    84,816.54x = 127,031.02 × 40,474.42
  4. Step 4: Simplify right side
    84,816.54x = 5,141,506,437.74
  5. Step 5: Solve for x
    x = 5,141,506,437.74/84,816.54
  6. Step 6: Final answer
    x = 60,619.15

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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.