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Finding the Fourth Proportional to 421,711.95, 632,617.11 and 421,711.95

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Solution

The fourth proportional to 421,711.95, 632,617.11 and 421,711.95 is: 632,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,711.95 : 632,617.11 = 421,711.95 : x
  2. Step 2: Convert to fraction form
    421,711.95/632,617.11 = 421,711.95/x
  3. Step 3: Cross multiply
    421,711.95x = 632,617.11 × 421,711.95
  4. Step 4: Simplify right side
    421,711.95x = 266,782,195,061.47
  5. Step 5: Solve for x
    x = 266,782,195,061.47/421,711.95
  6. Step 6: Final answer
    x = 632,617.11

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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.