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Finding the Fourth Proportional to 7,153.46, 9,869.42 and 4,319.76

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Solution

The fourth proportional to 7,153.46, 9,869.42 and 4,319.76 is: 5,959.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.46 : 9,869.42 = 4,319.76 : x
  2. Step 2: Convert to fraction form
    7,153.46/9,869.42 = 4,319.76/x
  3. Step 3: Cross multiply
    7,153.46x = 9,869.42 × 4,319.76
  4. Step 4: Simplify right side
    7,153.46x = 42,633,504.14
  5. Step 5: Solve for x
    x = 42,633,504.14/7,153.46
  6. Step 6: Final answer
    x = 5,959.84

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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.