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Finding the Fourth Proportional to 56,191.71, 77,537.96 and 31,039.71

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Solution

The fourth proportional to 56,191.71, 77,537.96 and 31,039.71 is: 42,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,191.71 : 77,537.96 = 31,039.71 : x
  2. Step 2: Convert to fraction form
    56,191.71/77,537.96 = 31,039.71/x
  3. Step 3: Cross multiply
    56,191.71x = 77,537.96 × 31,039.71
  4. Step 4: Simplify right side
    56,191.71x = 2,406,755,637.19
  5. Step 5: Solve for x
    x = 2,406,755,637.19/56,191.71
  6. Step 6: Final answer
    x = 42,831.15

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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.