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Finding the Fourth Proportional to 29,400.90, 40,573.08 and 15,972.05

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Solution

The fourth proportional to 29,400.90, 40,573.08 and 15,972.05 is: 22,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,400.90 : 40,573.08 = 15,972.05 : x
  2. Step 2: Convert to fraction form
    29,400.90/40,573.08 = 15,972.05/x
  3. Step 3: Cross multiply
    29,400.90x = 40,573.08 × 15,972.05
  4. Step 4: Simplify right side
    29,400.90x = 648,035,262.41
  5. Step 5: Solve for x
    x = 648,035,262.41/29,400.90
  6. Step 6: Final answer
    x = 22,041.34

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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.