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Finding the Fourth Proportional to 662,693.54, 914,520.58 and 387,211.73

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Solution

The fourth proportional to 662,693.54, 914,520.58 and 387,211.73 is: 534,354.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,693.54 : 914,520.58 = 387,211.73 : x
  2. Step 2: Convert to fraction form
    662,693.54/914,520.58 = 387,211.73/x
  3. Step 3: Cross multiply
    662,693.54x = 914,520.58 × 387,211.73
  4. Step 4: Simplify right side
    662,693.54x = 354,113,090,361.77
  5. Step 5: Solve for x
    x = 354,113,090,361.77/662,693.54
  6. Step 6: Final answer
    x = 534,354.23

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1.5x scale

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.