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Finding the Fourth Proportional to 12,998.52, 17,937.95 and 7,030.22

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Solution

The fourth proportional to 12,998.52, 17,937.95 and 7,030.22 is: 9,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.52 : 17,937.95 = 7,030.22 : x
  2. Step 2: Convert to fraction form
    12,998.52/17,937.95 = 7,030.22/x
  3. Step 3: Cross multiply
    12,998.52x = 17,937.95 × 7,030.22
  4. Step 4: Simplify right side
    12,998.52x = 126,107,610.01
  5. Step 5: Solve for x
    x = 126,107,610.01/12,998.52
  6. Step 6: Final answer
    x = 9,701.69

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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.