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Finding the Fourth Proportional to 75,417.80, 112,932.30 and 59,865.80

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Solution

The fourth proportional to 75,417.80, 112,932.30 and 59,865.80 is: 89,644.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,417.80 : 112,932.30 = 59,865.80 : x
  2. Step 2: Convert to fraction form
    75,417.80/112,932.30 = 59,865.80/x
  3. Step 3: Cross multiply
    75,417.80x = 112,932.30 × 59,865.80
  4. Step 4: Simplify right side
    75,417.80x = 6,760,782,485.34
  5. Step 5: Solve for x
    x = 6,760,782,485.34/75,417.80
  6. Step 6: Final answer
    x = 89,644.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.