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Finding the Fourth Proportional to 638,191.89, 880,693.51 and 347,806.13

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Solution

The fourth proportional to 638,191.89, 880,693.51 and 347,806.13 is: 479,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,191.89 : 880,693.51 = 347,806.13 : x
  2. Step 2: Convert to fraction form
    638,191.89/880,693.51 = 347,806.13/x
  3. Step 3: Cross multiply
    638,191.89x = 880,693.51 × 347,806.13
  4. Step 4: Simplify right side
    638,191.89x = 306,310,599,285.32
  5. Step 5: Solve for x
    x = 306,310,599,285.32/638,191.89
  6. Step 6: Final answer
    x = 479,966.30

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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.