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Finding the Fourth Proportional to 157,987.80, 236,974.41 and 39,656.52

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Solution

The fourth proportional to 157,987.80, 236,974.41 and 39,656.52 is: 59,482.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,987.80 : 236,974.41 = 39,656.52 : x
  2. Step 2: Convert to fraction form
    157,987.80/236,974.41 = 39,656.52/x
  3. Step 3: Cross multiply
    157,987.80x = 236,974.41 × 39,656.52
  4. Step 4: Simplify right side
    157,987.80x = 9,397,580,429.65
  5. Step 5: Solve for x
    x = 9,397,580,429.65/157,987.80
  6. Step 6: Final answer
    x = 59,482.95

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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.