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Finding the Fourth Proportional to 127,870.60, 192,024.60 and 83,693.20

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Solution

The fourth proportional to 127,870.60, 192,024.60 and 83,693.20 is: 125,682.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,870.60 : 192,024.60 = 83,693.20 : x
  2. Step 2: Convert to fraction form
    127,870.60/192,024.60 = 83,693.20/x
  3. Step 3: Cross multiply
    127,870.60x = 192,024.60 × 83,693.20
  4. Step 4: Simplify right side
    127,870.60x = 16,071,153,252.72
  5. Step 5: Solve for x
    x = 16,071,153,252.72/127,870.60
  6. Step 6: Final answer
    x = 125,682.94

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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.