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Finding the Fourth Proportional to 180,216.68, 248,694.62 and 99,642.15

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Solution

The fourth proportional to 180,216.68, 248,694.62 and 99,642.15 is: 137,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,216.68 : 248,694.62 = 99,642.15 : x
  2. Step 2: Convert to fraction form
    180,216.68/248,694.62 = 99,642.15/x
  3. Step 3: Cross multiply
    180,216.68x = 248,694.62 × 99,642.15
  4. Step 4: Simplify right side
    180,216.68x = 24,780,466,132.02
  5. Step 5: Solve for x
    x = 24,780,466,132.02/180,216.68
  6. Step 6: Final answer
    x = 137,503.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.