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Finding the Fourth Proportional to 291,411.40, 437,141.70 and 81,049.34

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Solution

The fourth proportional to 291,411.40, 437,141.70 and 81,049.34 is: 121,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,411.40 : 437,141.70 = 81,049.34 : x
  2. Step 2: Convert to fraction form
    291,411.40/437,141.70 = 81,049.34/x
  3. Step 3: Cross multiply
    291,411.40x = 437,141.70 × 81,049.34
  4. Step 4: Simplify right side
    291,411.40x = 35,430,044,647.56
  5. Step 5: Solve for x
    x = 35,430,044,647.56/291,411.40
  6. Step 6: Final answer
    x = 121,580.85

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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.