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Finding the Fourth Proportional to 157,233.61, 216,987.02 and 85,616.65

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Solution

The fourth proportional to 157,233.61, 216,987.02 and 85,616.65 is: 118,153.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,233.61 : 216,987.02 = 85,616.65 : x
  2. Step 2: Convert to fraction form
    157,233.61/216,987.02 = 85,616.65/x
  3. Step 3: Cross multiply
    157,233.61x = 216,987.02 × 85,616.65
  4. Step 4: Simplify right side
    157,233.61x = 18,577,701,745.88
  5. Step 5: Solve for x
    x = 18,577,701,745.88/157,233.61
  6. Step 6: Final answer
    x = 118,153.50

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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.