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Finding the Fourth Proportional to 638,164.77, 880,667.53 and 347,776.41

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Solution

The fourth proportional to 638,164.77, 880,667.53 and 347,776.41 is: 479,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,164.77 : 880,667.53 = 347,776.41 : x
  2. Step 2: Convert to fraction form
    638,164.77/880,667.53 = 347,776.41/x
  3. Step 3: Cross multiply
    638,164.77x = 880,667.53 × 347,776.41
  4. Step 4: Simplify right side
    638,164.77x = 306,275,390,248.09
  5. Step 5: Solve for x
    x = 306,275,390,248.09/638,164.77
  6. Step 6: Final answer
    x = 479,931.53

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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.