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Finding the Fourth Proportional to 7,248.74, 9,981.01 and 6,347.32

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Solution

The fourth proportional to 7,248.74, 9,981.01 and 6,347.32 is: 8,739.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,248.74 : 9,981.01 = 6,347.32 : x
  2. Step 2: Convert to fraction form
    7,248.74/9,981.01 = 6,347.32/x
  3. Step 3: Cross multiply
    7,248.74x = 9,981.01 × 6,347.32
  4. Step 4: Simplify right side
    7,248.74x = 63,352,647.37
  5. Step 5: Solve for x
    x = 63,352,647.37/7,248.74
  6. Step 6: Final answer
    x = 8,739.82

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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.