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Finding the Fourth Proportional to 186,159.48, 279,017.28 and 129,693.84

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Solution

The fourth proportional to 186,159.48, 279,017.28 and 129,693.84 is: 194,386.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,159.48 : 279,017.28 = 129,693.84 : x
  2. Step 2: Convert to fraction form
    186,159.48/279,017.28 = 129,693.84/x
  3. Step 3: Cross multiply
    186,159.48x = 279,017.28 × 129,693.84
  4. Step 4: Simplify right side
    186,159.48x = 36,186,822,469.56
  5. Step 5: Solve for x
    x = 36,186,822,469.56/186,159.48
  6. Step 6: Final answer
    x = 194,386.14

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1.5x scale

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.