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Finding the Fourth Proportional to 186,447.80, 257,209.80 and 126,039.62

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Solution

The fourth proportional to 186,447.80, 257,209.80 and 126,039.62 is: 173,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,447.80 : 257,209.80 = 126,039.62 : x
  2. Step 2: Convert to fraction form
    186,447.80/257,209.80 = 126,039.62/x
  3. Step 3: Cross multiply
    186,447.80x = 257,209.80 × 126,039.62
  4. Step 4: Simplify right side
    186,447.80x = 32,418,625,452.28
  5. Step 5: Solve for x
    x = 32,418,625,452.28/186,447.80
  6. Step 6: Final answer
    x = 173,875.08

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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.