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Finding the Fourth Proportional to 51,562.70, 77,344.05 and 38,440.70

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Solution

The fourth proportional to 51,562.70, 77,344.05 and 38,440.70 is: 57,661.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,562.70 : 77,344.05 = 38,440.70 : x
  2. Step 2: Convert to fraction form
    51,562.70/77,344.05 = 38,440.70/x
  3. Step 3: Cross multiply
    51,562.70x = 77,344.05 × 38,440.70
  4. Step 4: Simplify right side
    51,562.70x = 2,973,159,422.84
  5. Step 5: Solve for x
    x = 2,973,159,422.84/51,562.70
  6. Step 6: Final answer
    x = 57,661.05

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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.