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Finding the Fourth Proportional to 186,117.70, 279,176.55 and 115,258.90

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Solution

The fourth proportional to 186,117.70, 279,176.55 and 115,258.90 is: 172,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,117.70 : 279,176.55 = 115,258.90 : x
  2. Step 2: Convert to fraction form
    186,117.70/279,176.55 = 115,258.90/x
  3. Step 3: Cross multiply
    186,117.70x = 279,176.55 × 115,258.90
  4. Step 4: Simplify right side
    186,117.70x = 32,177,582,058.80
  5. Step 5: Solve for x
    x = 32,177,582,058.80/186,117.70
  6. Step 6: Final answer
    x = 172,888.35

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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.