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Finding the Fourth Proportional to 210,013.11, 314,892.99 and 83,672.82

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Solution

The fourth proportional to 210,013.11, 314,892.99 and 83,672.82 is: 125,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,013.11 : 314,892.99 = 83,672.82 : x
  2. Step 2: Convert to fraction form
    210,013.11/314,892.99 = 83,672.82/x
  3. Step 3: Cross multiply
    210,013.11x = 314,892.99 × 83,672.82
  4. Step 4: Simplify right side
    210,013.11x = 26,347,984,471.53
  5. Step 5: Solve for x
    x = 26,347,984,471.53/210,013.11
  6. Step 6: Final answer
    x = 125,458.76

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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.