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Finding the Fourth Proportional to 186,798.25, 257,781.59 and 119,730.25

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Solution

The fourth proportional to 186,798.25, 257,781.59 and 119,730.25 is: 165,227.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,798.25 : 257,781.59 = 119,730.25 : x
  2. Step 2: Convert to fraction form
    186,798.25/257,781.59 = 119,730.25/x
  3. Step 3: Cross multiply
    186,798.25x = 257,781.59 × 119,730.25
  4. Step 4: Simplify right side
    186,798.25x = 30,864,253,617.45
  5. Step 5: Solve for x
    x = 30,864,253,617.45/186,798.25
  6. Step 6: Final answer
    x = 165,227.75

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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.