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Finding the Fourth Proportional to 186,371.84, 257,203.96 and 140,349.11

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Solution

The fourth proportional to 186,371.84, 257,203.96 and 140,349.11 is: 193,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,371.84 : 257,203.96 = 140,349.11 : x
  2. Step 2: Convert to fraction form
    186,371.84/257,203.96 = 140,349.11/x
  3. Step 3: Cross multiply
    186,371.84x = 257,203.96 × 140,349.11
  4. Step 4: Simplify right side
    186,371.84x = 36,098,345,237.58
  5. Step 5: Solve for x
    x = 36,098,345,237.58/186,371.84
  6. Step 6: Final answer
    x = 193,689.91

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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.