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Finding the Fourth Proportional to 90,963, 136,472.04 and 46,621.17

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Solution

The fourth proportional to 90,963, 136,472.04 and 46,621.17 is: 69,945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,963 : 136,472.04 = 46,621.17 : x
  2. Step 2: Convert to fraction form
    90,963/136,472.04 = 46,621.17/x
  3. Step 3: Cross multiply
    90,963x = 136,472.04 × 46,621.17
  4. Step 4: Simplify right side
    90,963x = 6,362,486,177.09
  5. Step 5: Solve for x
    x = 6,362,486,177.09/90,963
  6. Step 6: Final answer
    x = 69,945.87

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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.