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Finding the Fourth Proportional to 28,700.66, 43,053.47 and 7,924.16

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Solution

The fourth proportional to 28,700.66, 43,053.47 and 7,924.16 is: 11,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.66 : 43,053.47 = 7,924.16 : x
  2. Step 2: Convert to fraction form
    28,700.66/43,053.47 = 7,924.16/x
  3. Step 3: Cross multiply
    28,700.66x = 43,053.47 × 7,924.16
  4. Step 4: Simplify right side
    28,700.66x = 341,162,329.95
  5. Step 5: Solve for x
    x = 341,162,329.95/28,700.66
  6. Step 6: Final answer
    x = 11,886.92

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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.