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Finding the Fourth Proportional to 157,185.98, 216,915.57 and 85,565.82

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Solution

The fourth proportional to 157,185.98, 216,915.57 and 85,565.82 is: 118,080.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,185.98 : 216,915.57 = 85,565.82 : x
  2. Step 2: Convert to fraction form
    157,185.98/216,915.57 = 85,565.82/x
  3. Step 3: Cross multiply
    157,185.98x = 216,915.57 × 85,565.82
  4. Step 4: Simplify right side
    157,185.98x = 18,560,558,617.82
  5. Step 5: Solve for x
    x = 18,560,558,617.82/157,185.98
  6. Step 6: Final answer
    x = 118,080.25

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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.