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Finding the Fourth Proportional to 56,665.70, 84,998.55 and 56,320.10

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Solution

The fourth proportional to 56,665.70, 84,998.55 and 56,320.10 is: 84,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,665.70 : 84,998.55 = 56,320.10 : x
  2. Step 2: Convert to fraction form
    56,665.70/84,998.55 = 56,320.10/x
  3. Step 3: Cross multiply
    56,665.70x = 84,998.55 × 56,320.10
  4. Step 4: Simplify right side
    56,665.70x = 4,787,126,835.86
  5. Step 5: Solve for x
    x = 4,787,126,835.86/56,665.70
  6. Step 6: Final answer
    x = 84,480.15

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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.