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Finding the Fourth Proportional to 7,157.25, 9,877.14 and 4,013.64

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Solution

The fourth proportional to 7,157.25, 9,877.14 and 4,013.64 is: 5,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.25 : 9,877.14 = 4,013.64 : x
  2. Step 2: Convert to fraction form
    7,157.25/9,877.14 = 4,013.64/x
  3. Step 3: Cross multiply
    7,157.25x = 9,877.14 × 4,013.64
  4. Step 4: Simplify right side
    7,157.25x = 39,643,284.19
  5. Step 5: Solve for x
    x = 39,643,284.19/7,157.25
  6. Step 6: Final answer
    x = 5,538.90

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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.