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Finding the Fourth Proportional to 42,315.80, 63,473.69 and 17,338.80

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Solution

The fourth proportional to 42,315.80, 63,473.69 and 17,338.80 is: 26,008.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,315.80 : 63,473.69 = 17,338.80 : x
  2. Step 2: Convert to fraction form
    42,315.80/63,473.69 = 17,338.80/x
  3. Step 3: Cross multiply
    42,315.80x = 63,473.69 × 17,338.80
  4. Step 4: Simplify right side
    42,315.80x = 1,100,557,616.17
  5. Step 5: Solve for x
    x = 1,100,557,616.17/42,315.80
  6. Step 6: Final answer
    x = 26,008.20

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1.5x scale

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.