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Finding the Fourth Proportional to 7,159.19, 9,879.77 and 4,326.16

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Solution

The fourth proportional to 7,159.19, 9,879.77 and 4,326.16 is: 5,970.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.19 : 9,879.77 = 4,326.16 : x
  2. Step 2: Convert to fraction form
    7,159.19/9,879.77 = 4,326.16/x
  3. Step 3: Cross multiply
    7,159.19x = 9,879.77 × 4,326.16
  4. Step 4: Simplify right side
    7,159.19x = 42,741,470.42
  5. Step 5: Solve for x
    x = 42,741,470.42/7,159.19
  6. Step 6: Final answer
    x = 5,970.16

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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.