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Finding the Fourth Proportional to 9,642.76, 14,458.52 and 4,707.40

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Solution

The fourth proportional to 9,642.76, 14,458.52 and 4,707.40 is: 7,058.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,642.76 : 14,458.52 = 4,707.40 : x
  2. Step 2: Convert to fraction form
    9,642.76/14,458.52 = 4,707.40/x
  3. Step 3: Cross multiply
    9,642.76x = 14,458.52 × 4,707.40
  4. Step 4: Simplify right side
    9,642.76x = 68,062,037.05
  5. Step 5: Solve for x
    x = 68,062,037.05/9,642.76
  6. Step 6: Final answer
    x = 7,058.36

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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.