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Finding the Fourth Proportional to 7,899.98, 10,901.84 and 4,363.20

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Solution

The fourth proportional to 7,899.98, 10,901.84 and 4,363.20 is: 6,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.98 : 10,901.84 = 4,363.20 : x
  2. Step 2: Convert to fraction form
    7,899.98/10,901.84 = 4,363.20/x
  3. Step 3: Cross multiply
    7,899.98x = 10,901.84 × 4,363.20
  4. Step 4: Simplify right side
    7,899.98x = 47,566,886.47
  5. Step 5: Solve for x
    x = 47,566,886.47/7,899.98
  6. Step 6: Final answer
    x = 6,021.14

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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.