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Finding the Fourth Proportional to 75,620.80, 113,431.20 and 23,030.20

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Solution

The fourth proportional to 75,620.80, 113,431.20 and 23,030.20 is: 34,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,620.80 : 113,431.20 = 23,030.20 : x
  2. Step 2: Convert to fraction form
    75,620.80/113,431.20 = 23,030.20/x
  3. Step 3: Cross multiply
    75,620.80x = 113,431.20 × 23,030.20
  4. Step 4: Simplify right side
    75,620.80x = 2,612,343,222.24
  5. Step 5: Solve for x
    x = 2,612,343,222.24/75,620.80
  6. Step 6: Final answer
    x = 34,545.30

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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.