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Finding the Fourth Proportional to 928,645.20, 1,301,874.75 and 928,645.20

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Solution

The fourth proportional to 928,645.20, 1,301,874.75 and 928,645.20 is: 1,301,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,645.20 : 1,301,874.75 = 928,645.20 : x
  2. Step 2: Convert to fraction form
    928,645.20/1,301,874.75 = 928,645.20/x
  3. Step 3: Cross multiply
    928,645.20x = 1,301,874.75 × 928,645.20
  4. Step 4: Simplify right side
    928,645.20x = 1,208,979,737,588.70
  5. Step 5: Solve for x
    x = 1,208,979,737,588.70/928,645.20
  6. Step 6: Final answer
    x = 1,301,874.75

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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.