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Finding the Fourth Proportional to 7,159.07, 9,879.59 and 4,133.97

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Solution

The fourth proportional to 7,159.07, 9,879.59 and 4,133.97 is: 5,704.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.07 : 9,879.59 = 4,133.97 : x
  2. Step 2: Convert to fraction form
    7,159.07/9,879.59 = 4,133.97/x
  3. Step 3: Cross multiply
    7,159.07x = 9,879.59 × 4,133.97
  4. Step 4: Simplify right side
    7,159.07x = 40,841,915.75
  5. Step 5: Solve for x
    x = 40,841,915.75/7,159.07
  6. Step 6: Final answer
    x = 5,704.92

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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.