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Finding the Fourth Proportional to 187,071.28, 257,824.56 and 141,640.48

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Solution

The fourth proportional to 187,071.28, 257,824.56 and 141,640.48 is: 195,211.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,071.28 : 257,824.56 = 141,640.48 : x
  2. Step 2: Convert to fraction form
    187,071.28/257,824.56 = 141,640.48/x
  3. Step 3: Cross multiply
    187,071.28x = 257,824.56 × 141,640.48
  4. Step 4: Simplify right side
    187,071.28x = 36,518,394,434.19
  5. Step 5: Solve for x
    x = 36,518,394,434.19/187,071.28
  6. Step 6: Final answer
    x = 195,211.12

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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.