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Finding the Fourth Proportional to 7,191.98, 9,924.80 and 4,048.10

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Solution

The fourth proportional to 7,191.98, 9,924.80 and 4,048.10 is: 5,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.98 : 9,924.80 = 4,048.10 : x
  2. Step 2: Convert to fraction form
    7,191.98/9,924.80 = 4,048.10/x
  3. Step 3: Cross multiply
    7,191.98x = 9,924.80 × 4,048.10
  4. Step 4: Simplify right side
    7,191.98x = 40,176,582.88
  5. Step 5: Solve for x
    x = 40,176,582.88/7,191.98
  6. Step 6: Final answer
    x = 5,586.30

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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.