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Finding the Fourth Proportional to 1,377,915, 2,066,594.82 and 865,351.20

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Solution

The fourth proportional to 1,377,915, 2,066,594.82 and 865,351.20 is: 1,297,852.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,915 : 2,066,594.82 = 865,351.20 : x
  2. Step 2: Convert to fraction form
    1,377,915/2,066,594.82 = 865,351.20/x
  3. Step 3: Cross multiply
    1,377,915x = 2,066,594.82 × 865,351.20
  4. Step 4: Simplify right side
    1,377,915x = 1,788,330,307,400.78
  5. Step 5: Solve for x
    x = 1,788,330,307,400.78/1,377,915
  6. Step 6: Final answer
    x = 1,297,852.41

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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.