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Finding the Fourth Proportional to 29,470.89, 40,670.87 and 16,724.13

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Solution

The fourth proportional to 29,470.89, 40,670.87 and 16,724.13 is: 23,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,470.89 : 40,670.87 = 16,724.13 : x
  2. Step 2: Convert to fraction form
    29,470.89/40,670.87 = 16,724.13/x
  3. Step 3: Cross multiply
    29,470.89x = 40,670.87 × 16,724.13
  4. Step 4: Simplify right side
    29,470.89x = 680,184,917.09
  5. Step 5: Solve for x
    x = 680,184,917.09/29,470.89
  6. Step 6: Final answer
    x = 23,079.89

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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.