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Finding the Fourth Proportional to 101,866.40, 140,574.48 and 56,544.76

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Solution

The fourth proportional to 101,866.40, 140,574.48 and 56,544.76 is: 78,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,866.40 : 140,574.48 = 56,544.76 : x
  2. Step 2: Convert to fraction form
    101,866.40/140,574.48 = 56,544.76/x
  3. Step 3: Cross multiply
    101,866.40x = 140,574.48 × 56,544.76
  4. Step 4: Simplify right side
    101,866.40x = 7,948,750,233.72
  5. Step 5: Solve for x
    x = 7,948,750,233.72/101,866.40
  6. Step 6: Final answer
    x = 78,031.13

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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.