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Finding the Fourth Proportional to 868,223.80, 1,300,002.90 and 868,223.80

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Solution

The fourth proportional to 868,223.80, 1,300,002.90 and 868,223.80 is: 1,300,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,223.80 : 1,300,002.90 = 868,223.80 : x
  2. Step 2: Convert to fraction form
    868,223.80/1,300,002.90 = 868,223.80/x
  3. Step 3: Cross multiply
    868,223.80x = 1,300,002.90 × 868,223.80
  4. Step 4: Simplify right side
    868,223.80x = 1,128,693,457,849.02
  5. Step 5: Solve for x
    x = 1,128,693,457,849.02/868,223.80
  6. Step 6: Final answer
    x = 1,300,002.90

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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.