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Finding the Fourth Proportional to 52,395.85, 78,453.54 and 45,700.90

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Solution

The fourth proportional to 52,395.85, 78,453.54 and 45,700.90 is: 68,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,395.85 : 78,453.54 = 45,700.90 : x
  2. Step 2: Convert to fraction form
    52,395.85/78,453.54 = 45,700.90/x
  3. Step 3: Cross multiply
    52,395.85x = 78,453.54 × 45,700.90
  4. Step 4: Simplify right side
    52,395.85x = 3,585,397,386.19
  5. Step 5: Solve for x
    x = 3,585,397,386.19/52,395.85
  6. Step 6: Final answer
    x = 68,429.03

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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.