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Finding the Fourth Proportional to 74,482.91, 111,574.78 and 34,445.78

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Solution

The fourth proportional to 74,482.91, 111,574.78 and 34,445.78 is: 51,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,482.91 : 111,574.78 = 34,445.78 : x
  2. Step 2: Convert to fraction form
    74,482.91/111,574.78 = 34,445.78/x
  3. Step 3: Cross multiply
    74,482.91x = 111,574.78 × 34,445.78
  4. Step 4: Simplify right side
    74,482.91x = 3,843,279,681.44
  5. Step 5: Solve for x
    x = 3,843,279,681.44/74,482.91
  6. Step 6: Final answer
    x = 51,599.48

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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.