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Finding the Fourth Proportional to 186,488.60, 279,076.80 and 170,742.20

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Solution

The fourth proportional to 186,488.60, 279,076.80 and 170,742.20 is: 255,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,488.60 : 279,076.80 = 170,742.20 : x
  2. Step 2: Convert to fraction form
    186,488.60/279,076.80 = 170,742.20/x
  3. Step 3: Cross multiply
    186,488.60x = 279,076.80 × 170,742.20
  4. Step 4: Simplify right side
    186,488.60x = 47,650,186,800.96
  5. Step 5: Solve for x
    x = 47,650,186,800.96/186,488.60
  6. Step 6: Final answer
    x = 255,512.60

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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.