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Finding the Fourth Proportional to 818,411.40, 1,227,617.10 and 818,411.40

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Solution

The fourth proportional to 818,411.40, 1,227,617.10 and 818,411.40 is: 1,227,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,411.40 : 1,227,617.10 = 818,411.40 : x
  2. Step 2: Convert to fraction form
    818,411.40/1,227,617.10 = 818,411.40/x
  3. Step 3: Cross multiply
    818,411.40x = 1,227,617.10 × 818,411.40
  4. Step 4: Simplify right side
    818,411.40x = 1,004,695,829,474.94
  5. Step 5: Solve for x
    x = 1,004,695,829,474.94/818,411.40
  6. Step 6: Final answer
    x = 1,227,617.10

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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.