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Finding the Fourth Proportional to 127,506.93, 191,219.67 and 42,098.79

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Solution

The fourth proportional to 127,506.93, 191,219.67 and 42,098.79 is: 63,134.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,506.93 : 191,219.67 = 42,098.79 : x
  2. Step 2: Convert to fraction form
    127,506.93/191,219.67 = 42,098.79/x
  3. Step 3: Cross multiply
    127,506.93x = 191,219.67 × 42,098.79
  4. Step 4: Simplify right side
    127,506.93x = 8,050,116,731.20
  5. Step 5: Solve for x
    x = 8,050,116,731.20/127,506.93
  6. Step 6: Final answer
    x = 63,134.74

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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.