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Finding the Fourth Proportional to 212,422.93, 318,603.65 and 62,655.82

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Solution

The fourth proportional to 212,422.93, 318,603.65 and 62,655.82 is: 93,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,422.93 : 318,603.65 = 62,655.82 : x
  2. Step 2: Convert to fraction form
    212,422.93/318,603.65 = 62,655.82/x
  3. Step 3: Cross multiply
    212,422.93x = 318,603.65 × 62,655.82
  4. Step 4: Simplify right side
    212,422.93x = 19,962,371,835.95
  5. Step 5: Solve for x
    x = 19,962,371,835.95/212,422.93
  6. Step 6: Final answer
    x = 93,974.66

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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.