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Finding the Fourth Proportional to 186,459.20, 279,688.80 and 115,600.40

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Solution

The fourth proportional to 186,459.20, 279,688.80 and 115,600.40 is: 173,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,459.20 : 279,688.80 = 115,600.40 : x
  2. Step 2: Convert to fraction form
    186,459.20/279,688.80 = 115,600.40/x
  3. Step 3: Cross multiply
    186,459.20x = 279,688.80 × 115,600.40
  4. Step 4: Simplify right side
    186,459.20x = 32,332,137,155.52
  5. Step 5: Solve for x
    x = 32,332,137,155.52/186,459.20
  6. Step 6: Final answer
    x = 173,400.60

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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.