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Finding the Fourth Proportional to 29,335.80, 40,483.44 and 15,907

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Solution

The fourth proportional to 29,335.80, 40,483.44 and 15,907 is: 21,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,335.80 : 40,483.44 = 15,907 : x
  2. Step 2: Convert to fraction form
    29,335.80/40,483.44 = 15,907/x
  3. Step 3: Cross multiply
    29,335.80x = 40,483.44 × 15,907
  4. Step 4: Simplify right side
    29,335.80x = 643,970,080.08
  5. Step 5: Solve for x
    x = 643,970,080.08/29,335.80
  6. Step 6: Final answer
    x = 21,951.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.