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Finding the Fourth Proportional to 5,283.69, 7,291 and 3,158.80

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Solution

The fourth proportional to 5,283.69, 7,291 and 3,158.80 is: 4,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,283.69 : 7,291 = 3,158.80 : x
  2. Step 2: Convert to fraction form
    5,283.69/7,291 = 3,158.80/x
  3. Step 3: Cross multiply
    5,283.69x = 7,291 × 3,158.80
  4. Step 4: Simplify right side
    5,283.69x = 23,030,810.80
  5. Step 5: Solve for x
    x = 23,030,810.80/5,283.69
  6. Step 6: Final answer
    x = 4,358.85

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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.