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Finding the Fourth Proportional to 100,523.20, 150,566.10 and 61,011.40

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Solution

The fourth proportional to 100,523.20, 150,566.10 and 61,011.40 is: 91,384.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,523.20 : 150,566.10 = 61,011.40 : x
  2. Step 2: Convert to fraction form
    100,523.20/150,566.10 = 61,011.40/x
  3. Step 3: Cross multiply
    100,523.20x = 150,566.10 × 61,011.40
  4. Step 4: Simplify right side
    100,523.20x = 9,186,248,553.54
  5. Step 5: Solve for x
    x = 9,186,248,553.54/100,523.20
  6. Step 6: Final answer
    x = 91,384.36

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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.