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Finding the Fourth Proportional to 45,709.80, 68,564.70 and 34,045.80

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Solution

The fourth proportional to 45,709.80, 68,564.70 and 34,045.80 is: 51,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,709.80 : 68,564.70 = 34,045.80 : x
  2. Step 2: Convert to fraction form
    45,709.80/68,564.70 = 34,045.80/x
  3. Step 3: Cross multiply
    45,709.80x = 68,564.70 × 34,045.80
  4. Step 4: Simplify right side
    45,709.80x = 2,334,340,063.26
  5. Step 5: Solve for x
    x = 2,334,340,063.26/45,709.80
  6. Step 6: Final answer
    x = 51,068.70

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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.