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Finding the Fourth Proportional to 19,458.80, 29,223.40 and 17,039.60

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Solution

The fourth proportional to 19,458.80, 29,223.40 and 17,039.60 is: 25,590.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,458.80 : 29,223.40 = 17,039.60 : x
  2. Step 2: Convert to fraction form
    19,458.80/29,223.40 = 17,039.60/x
  3. Step 3: Cross multiply
    19,458.80x = 29,223.40 × 17,039.60
  4. Step 4: Simplify right side
    19,458.80x = 497,955,046.64
  5. Step 5: Solve for x
    x = 497,955,046.64/19,458.80
  6. Step 6: Final answer
    x = 25,590.22

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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.