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Finding the Fourth Proportional to 71,362.25, 98,435.35 and 45,901.79

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Solution

The fourth proportional to 71,362.25, 98,435.35 and 45,901.79 is: 63,315.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,362.25 : 98,435.35 = 45,901.79 : x
  2. Step 2: Convert to fraction form
    71,362.25/98,435.35 = 45,901.79/x
  3. Step 3: Cross multiply
    71,362.25x = 98,435.35 × 45,901.79
  4. Step 4: Simplify right side
    71,362.25x = 4,518,358,764.28
  5. Step 5: Solve for x
    x = 4,518,358,764.28/71,362.25
  6. Step 6: Final answer
    x = 63,315.81

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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.