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Finding the Fourth Proportional to 101,711.77, 140,366.69 and 56,386.87

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Solution

The fourth proportional to 101,711.77, 140,366.69 and 56,386.87 is: 77,816.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,711.77 : 140,366.69 = 56,386.87 : x
  2. Step 2: Convert to fraction form
    101,711.77/140,366.69 = 56,386.87/x
  3. Step 3: Cross multiply
    101,711.77x = 140,366.69 × 56,386.87
  4. Step 4: Simplify right side
    101,711.77x = 7,914,838,301.36
  5. Step 5: Solve for x
    x = 7,914,838,301.36/101,711.77
  6. Step 6: Final answer
    x = 77,816.35

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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.