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Finding the Fourth Proportional to 43,176.70, 64,655.70 and 34,428.70

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Solution

The fourth proportional to 43,176.70, 64,655.70 and 34,428.70 is: 51,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,176.70 : 64,655.70 = 34,428.70 : x
  2. Step 2: Convert to fraction form
    43,176.70/64,655.70 = 34,428.70/x
  3. Step 3: Cross multiply
    43,176.70x = 64,655.70 × 34,428.70
  4. Step 4: Simplify right side
    43,176.70x = 2,226,011,698.59
  5. Step 5: Solve for x
    x = 2,226,011,698.59/43,176.70
  6. Step 6: Final answer
    x = 51,555.86

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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.