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Finding the Fourth Proportional to 7,880.71, 10,875.62 and 4,344.15

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Solution

The fourth proportional to 7,880.71, 10,875.62 and 4,344.15 is: 5,995.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.71 : 10,875.62 = 4,344.15 : x
  2. Step 2: Convert to fraction form
    7,880.71/10,875.62 = 4,344.15/x
  3. Step 3: Cross multiply
    7,880.71x = 10,875.62 × 4,344.15
  4. Step 4: Simplify right side
    7,880.71x = 47,245,302.90
  5. Step 5: Solve for x
    x = 47,245,302.90/7,880.71
  6. Step 6: Final answer
    x = 5,995.06

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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.