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Finding the Fourth Proportional to 7,871.79, 10,863.14 and 4,335.01

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Solution

The fourth proportional to 7,871.79, 10,863.14 and 4,335.01 is: 5,982.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.79 : 10,863.14 = 4,335.01 : x
  2. Step 2: Convert to fraction form
    7,871.79/10,863.14 = 4,335.01/x
  3. Step 3: Cross multiply
    7,871.79x = 10,863.14 × 4,335.01
  4. Step 4: Simplify right side
    7,871.79x = 47,091,820.53
  5. Step 5: Solve for x
    x = 47,091,820.53/7,871.79
  6. Step 6: Final answer
    x = 5,982.35

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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.