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Finding the Fourth Proportional to 1,562,781, 2,156,650.80 and 847,389

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Solution

The fourth proportional to 1,562,781, 2,156,650.80 and 847,389 is: 1,169,403.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562,781 : 2,156,650.80 = 847,389 : x
  2. Step 2: Convert to fraction form
    1,562,781/2,156,650.80 = 847,389/x
  3. Step 3: Cross multiply
    1,562,781x = 2,156,650.80 × 847,389
  4. Step 4: Simplify right side
    1,562,781x = 1,827,522,164,761.20
  5. Step 5: Solve for x
    x = 1,827,522,164,761.20/1,562,781
  6. Step 6: Final answer
    x = 1,169,403.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.