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Finding the Fourth Proportional to 5,590.80, 7,720.92 and 4,605.84

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Solution

The fourth proportional to 5,590.80, 7,720.92 and 4,605.84 is: 6,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.80 : 7,720.92 = 4,605.84 : x
  2. Step 2: Convert to fraction form
    5,590.80/7,720.92 = 4,605.84/x
  3. Step 3: Cross multiply
    5,590.80x = 7,720.92 × 4,605.84
  4. Step 4: Simplify right side
    5,590.80x = 35,561,322.17
  5. Step 5: Solve for x
    x = 35,561,322.17/5,590.80
  6. Step 6: Final answer
    x = 6,360.69

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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.