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Finding the Fourth Proportional to 186,245.76, 256,875 and 125,720.56

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Solution

The fourth proportional to 186,245.76, 256,875 and 125,720.56 is: 173,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,245.76 : 256,875 = 125,720.56 : x
  2. Step 2: Convert to fraction form
    186,245.76/256,875 = 125,720.56/x
  3. Step 3: Cross multiply
    186,245.76x = 256,875 × 125,720.56
  4. Step 4: Simplify right side
    186,245.76x = 32,294,468,850
  5. Step 5: Solve for x
    x = 32,294,468,850/186,245.76
  6. Step 6: Final answer
    x = 173,397.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.