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Finding the Fourth Proportional to 7,011.84, 9,675.90 and 3,868.02

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Solution

The fourth proportional to 7,011.84, 9,675.90 and 3,868.02 is: 5,337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.84 : 9,675.90 = 3,868.02 : x
  2. Step 2: Convert to fraction form
    7,011.84/9,675.90 = 3,868.02/x
  3. Step 3: Cross multiply
    7,011.84x = 9,675.90 × 3,868.02
  4. Step 4: Simplify right side
    7,011.84x = 37,426,574.72
  5. Step 5: Solve for x
    x = 37,426,574.72/7,011.84
  6. Step 6: Final answer
    x = 5,337.63

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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.