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Finding the Fourth Proportional to 7,001.84, 9,661.79 and 4,017.61

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Solution

The fourth proportional to 7,001.84, 9,661.79 and 4,017.61 is: 5,543.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,001.84 : 9,661.79 = 4,017.61 : x
  2. Step 2: Convert to fraction form
    7,001.84/9,661.79 = 4,017.61/x
  3. Step 3: Cross multiply
    7,001.84x = 9,661.79 × 4,017.61
  4. Step 4: Simplify right side
    7,001.84x = 38,817,235.72
  5. Step 5: Solve for x
    x = 38,817,235.72/7,001.84
  6. Step 6: Final answer
    x = 5,543.86

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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.