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Finding the Fourth Proportional to 212,484.62, 318,761.55 and 62,740.05

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Solution

The fourth proportional to 212,484.62, 318,761.55 and 62,740.05 is: 94,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,484.62 : 318,761.55 = 62,740.05 : x
  2. Step 2: Convert to fraction form
    212,484.62/318,761.55 = 62,740.05/x
  3. Step 3: Cross multiply
    212,484.62x = 318,761.55 × 62,740.05
  4. Step 4: Simplify right side
    212,484.62x = 19,999,114,389.72
  5. Step 5: Solve for x
    x = 19,999,114,389.72/212,484.62
  6. Step 6: Final answer
    x = 94,120.29

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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.