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Finding the Fourth Proportional to 453,119.40, 679,095.90 and 347,414.40

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Solution

The fourth proportional to 453,119.40, 679,095.90 and 347,414.40 is: 520,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,119.40 : 679,095.90 = 347,414.40 : x
  2. Step 2: Convert to fraction form
    453,119.40/679,095.90 = 347,414.40/x
  3. Step 3: Cross multiply
    453,119.40x = 679,095.90 × 347,414.40
  4. Step 4: Simplify right side
    453,119.40x = 235,927,694,640.96
  5. Step 5: Solve for x
    x = 235,927,694,640.96/453,119.40
  6. Step 6: Final answer
    x = 520,674.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.