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Finding the Fourth Proportional to 677,446.96, 934,845.16 and 391,059.32

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Solution

The fourth proportional to 677,446.96, 934,845.16 and 391,059.32 is: 539,643.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,446.96 : 934,845.16 = 391,059.32 : x
  2. Step 2: Convert to fraction form
    677,446.96/934,845.16 = 391,059.32/x
  3. Step 3: Cross multiply
    677,446.96x = 934,845.16 × 391,059.32
  4. Step 4: Simplify right side
    677,446.96x = 365,579,912,574.89
  5. Step 5: Solve for x
    x = 365,579,912,574.89/677,446.96
  6. Step 6: Final answer
    x = 539,643.59

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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.