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Finding the Fourth Proportional to 7,960.80, 10,987.30 and 4,603.08

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Solution

The fourth proportional to 7,960.80, 10,987.30 and 4,603.08 is: 6,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.80 : 10,987.30 = 4,603.08 : x
  2. Step 2: Convert to fraction form
    7,960.80/10,987.30 = 4,603.08/x
  3. Step 3: Cross multiply
    7,960.80x = 10,987.30 × 4,603.08
  4. Step 4: Simplify right side
    7,960.80x = 50,575,420.88
  5. Step 5: Solve for x
    x = 50,575,420.88/7,960.80
  6. Step 6: Final answer
    x = 6,353.06

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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.