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Finding the Fourth Proportional to 185,411.80, 278,117.70 and 125,536.60

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Solution

The fourth proportional to 185,411.80, 278,117.70 and 125,536.60 is: 188,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,411.80 : 278,117.70 = 125,536.60 : x
  2. Step 2: Convert to fraction form
    185,411.80/278,117.70 = 125,536.60/x
  3. Step 3: Cross multiply
    185,411.80x = 278,117.70 × 125,536.60
  4. Step 4: Simplify right side
    185,411.80x = 34,913,950,457.82
  5. Step 5: Solve for x
    x = 34,913,950,457.82/185,411.80
  6. Step 6: Final answer
    x = 188,304.90

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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.