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Finding the Fourth Proportional to 186,276.61, 279,327.44 and 86,374.45

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Solution

The fourth proportional to 186,276.61, 279,327.44 and 86,374.45 is: 129,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,276.61 : 279,327.44 = 86,374.45 : x
  2. Step 2: Convert to fraction form
    186,276.61/279,327.44 = 86,374.45/x
  3. Step 3: Cross multiply
    186,276.61x = 279,327.44 × 86,374.45
  4. Step 4: Simplify right side
    186,276.61x = 24,126,754,079.15
  5. Step 5: Solve for x
    x = 24,126,754,079.15/186,276.61
  6. Step 6: Final answer
    x = 129,521.11

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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.