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Finding the Fourth Proportional to 623,083.56, 859,873.14 and 347,447.76

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Solution

The fourth proportional to 623,083.56, 859,873.14 and 347,447.76 is: 479,487.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,083.56 : 859,873.14 = 347,447.76 : x
  2. Step 2: Convert to fraction form
    623,083.56/859,873.14 = 347,447.76/x
  3. Step 3: Cross multiply
    623,083.56x = 859,873.14 × 347,447.76
  4. Step 4: Simplify right side
    623,083.56x = 298,760,996,377.17
  5. Step 5: Solve for x
    x = 298,760,996,377.17/623,083.56
  6. Step 6: Final answer
    x = 479,487.85

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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.