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Finding the Fourth Proportional to 31,666.70, 43,670.16 and 23,618.12

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Solution

The fourth proportional to 31,666.70, 43,670.16 and 23,618.12 is: 32,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,666.70 : 43,670.16 = 23,618.12 : x
  2. Step 2: Convert to fraction form
    31,666.70/43,670.16 = 23,618.12/x
  3. Step 3: Cross multiply
    31,666.70x = 43,670.16 × 23,618.12
  4. Step 4: Simplify right side
    31,666.70x = 1,031,407,079.30
  5. Step 5: Solve for x
    x = 1,031,407,079.30/31,666.70
  6. Step 6: Final answer
    x = 32,570.72

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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.