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Finding the Fourth Proportional to 127,397.61, 191,019.06 and 52,566.57

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Solution

The fourth proportional to 127,397.61, 191,019.06 and 52,566.57 is: 78,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,397.61 : 191,019.06 = 52,566.57 : x
  2. Step 2: Convert to fraction form
    127,397.61/191,019.06 = 52,566.57/x
  3. Step 3: Cross multiply
    127,397.61x = 191,019.06 × 52,566.57
  4. Step 4: Simplify right side
    127,397.61x = 10,041,216,788.82
  5. Step 5: Solve for x
    x = 10,041,216,788.82/127,397.61
  6. Step 6: Final answer
    x = 78,817.94

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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.