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Finding the Fourth Proportional to 934,400.90, 1,311,704.20 and 934,400.90

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Solution

The fourth proportional to 934,400.90, 1,311,704.20 and 934,400.90 is: 1,311,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,400.90 : 1,311,704.20 = 934,400.90 : x
  2. Step 2: Convert to fraction form
    934,400.90/1,311,704.20 = 934,400.90/x
  3. Step 3: Cross multiply
    934,400.90x = 1,311,704.20 × 934,400.90
  4. Step 4: Simplify right side
    934,400.90x = 1,225,657,585,013.78
  5. Step 5: Solve for x
    x = 1,225,657,585,013.78/934,400.90
  6. Step 6: Final answer
    x = 1,311,704.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.