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Finding the Fourth Proportional to 212,404.71, 318,599.64 and 62,647.32

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Solution

The fourth proportional to 212,404.71, 318,599.64 and 62,647.32 is: 93,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,404.71 : 318,599.64 = 62,647.32 : x
  2. Step 2: Convert to fraction form
    212,404.71/318,599.64 = 62,647.32/x
  3. Step 3: Cross multiply
    212,404.71x = 318,599.64 × 62,647.32
  4. Step 4: Simplify right side
    212,404.71x = 19,959,413,598.96
  5. Step 5: Solve for x
    x = 19,959,413,598.96/212,404.71
  6. Step 6: Final answer
    x = 93,968.79

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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.