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Finding the Fourth Proportional to 99,359.66, 149,041.19 and 28,284.12

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Solution

The fourth proportional to 99,359.66, 149,041.19 and 28,284.12 is: 42,426.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,359.66 : 149,041.19 = 28,284.12 : x
  2. Step 2: Convert to fraction form
    99,359.66/149,041.19 = 28,284.12/x
  3. Step 3: Cross multiply
    99,359.66x = 149,041.19 × 28,284.12
  4. Step 4: Simplify right side
    99,359.66x = 4,215,498,761.48
  5. Step 5: Solve for x
    x = 4,215,498,761.48/99,359.66
  6. Step 6: Final answer
    x = 42,426.66

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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.