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Finding the Fourth Proportional to 7,153.52, 9,871.86 and 4,359.02

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Solution

The fourth proportional to 7,153.52, 9,871.86 and 4,359.02 is: 6,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.52 : 9,871.86 = 4,359.02 : x
  2. Step 2: Convert to fraction form
    7,153.52/9,871.86 = 4,359.02/x
  3. Step 3: Cross multiply
    7,153.52x = 9,871.86 × 4,359.02
  4. Step 4: Simplify right side
    7,153.52x = 43,031,635.18
  5. Step 5: Solve for x
    x = 43,031,635.18/7,153.52
  6. Step 6: Final answer
    x = 6,015.45

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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.