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Finding the Fourth Proportional to 186,805.62, 257,490.57 and 126,354.18

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Solution

The fourth proportional to 186,805.62, 257,490.57 and 126,354.18 is: 174,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,805.62 : 257,490.57 = 126,354.18 : x
  2. Step 2: Convert to fraction form
    186,805.62/257,490.57 = 126,354.18/x
  3. Step 3: Cross multiply
    186,805.62x = 257,490.57 × 126,354.18
  4. Step 4: Simplify right side
    186,805.62x = 32,535,009,830.08
  5. Step 5: Solve for x
    x = 32,535,009,830.08/186,805.62
  6. Step 6: Final answer
    x = 174,165.05

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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.