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Finding the Fourth Proportional to 868,223.30, 1,300,002.15 and 868,223.30

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Solution

The fourth proportional to 868,223.30, 1,300,002.15 and 868,223.30 is: 1,300,002.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,223.30 : 1,300,002.15 = 868,223.30 : x
  2. Step 2: Convert to fraction form
    868,223.30/1,300,002.15 = 868,223.30/x
  3. Step 3: Cross multiply
    868,223.30x = 1,300,002.15 × 868,223.30
  4. Step 4: Simplify right side
    868,223.30x = 1,128,692,156,680.10
  5. Step 5: Solve for x
    x = 1,128,692,156,680.10/868,223.30
  6. Step 6: Final answer
    x = 1,300,002.15

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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.