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Finding the Fourth Proportional to 7,115.85, 10,661.22 and 4,335.93

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Solution

The fourth proportional to 7,115.85, 10,661.22 and 4,335.93 is: 6,496.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.85 : 10,661.22 = 4,335.93 : x
  2. Step 2: Convert to fraction form
    7,115.85/10,661.22 = 4,335.93/x
  3. Step 3: Cross multiply
    7,115.85x = 10,661.22 × 4,335.93
  4. Step 4: Simplify right side
    7,115.85x = 46,226,303.63
  5. Step 5: Solve for x
    x = 46,226,303.63/7,115.85
  6. Step 6: Final answer
    x = 6,496.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.