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Finding the Fourth Proportional to 836,693.86, 1,154,637 and 454,720.72

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Solution

The fourth proportional to 836,693.86, 1,154,637 and 454,720.72 is: 627,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,693.86 : 1,154,637 = 454,720.72 : x
  2. Step 2: Convert to fraction form
    836,693.86/1,154,637 = 454,720.72/x
  3. Step 3: Cross multiply
    836,693.86x = 1,154,637 × 454,720.72
  4. Step 4: Simplify right side
    836,693.86x = 525,037,367,978.64
  5. Step 5: Solve for x
    x = 525,037,367,978.64/836,693.86
  6. Step 6: Final answer
    x = 627,514.31

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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.