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Finding the Fourth Proportional to 92,915.65, 128,227.13 and 52,080.52

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Solution

The fourth proportional to 92,915.65, 128,227.13 and 52,080.52 is: 71,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,915.65 : 128,227.13 = 52,080.52 : x
  2. Step 2: Convert to fraction form
    92,915.65/128,227.13 = 52,080.52/x
  3. Step 3: Cross multiply
    92,915.65x = 128,227.13 × 52,080.52
  4. Step 4: Simplify right side
    92,915.65x = 6,678,135,608.51
  5. Step 5: Solve for x
    x = 6,678,135,608.51/92,915.65
  6. Step 6: Final answer
    x = 71,873.10

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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.