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Finding the Fourth Proportional to 123,712.20, 185,525.10 and 64,528.20

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Solution

The fourth proportional to 123,712.20, 185,525.10 and 64,528.20 is: 96,769.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,712.20 : 185,525.10 = 64,528.20 : x
  2. Step 2: Convert to fraction form
    123,712.20/185,525.10 = 64,528.20/x
  3. Step 3: Cross multiply
    123,712.20x = 185,525.10 × 64,528.20
  4. Step 4: Simplify right side
    123,712.20x = 11,971,600,757.82
  5. Step 5: Solve for x
    x = 11,971,600,757.82/123,712.20
  6. Step 6: Final answer
    x = 96,769.77

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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.