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Finding the Fourth Proportional to 69,043.40, 95,275.80 and 38,415.68

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Solution

The fourth proportional to 69,043.40, 95,275.80 and 38,415.68 is: 53,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,043.40 : 95,275.80 = 38,415.68 : x
  2. Step 2: Convert to fraction form
    69,043.40/95,275.80 = 38,415.68/x
  3. Step 3: Cross multiply
    69,043.40x = 95,275.80 × 38,415.68
  4. Step 4: Simplify right side
    69,043.40x = 3,660,084,168.17
  5. Step 5: Solve for x
    x = 3,660,084,168.17/69,043.40
  6. Step 6: Final answer
    x = 53,011.36

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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.