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Finding the Fourth Proportional to 638,194.34, 880,685.86 and 347,800.00

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Solution

The fourth proportional to 638,194.34, 880,685.86 and 347,800.00 is: 479,951.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,194.34 : 880,685.86 = 347,800.00 : x
  2. Step 2: Convert to fraction form
    638,194.34/880,685.86 = 347,800.00/x
  3. Step 3: Cross multiply
    638,194.34x = 880,685.86 × 347,800.00
  4. Step 4: Simplify right side
    638,194.34x = 306,302,539,036.79
  5. Step 5: Solve for x
    x = 306,302,539,036.79/638,194.34
  6. Step 6: Final answer
    x = 479,951.82

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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.