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Finding the Fourth Proportional to 212,431.95, 318,538.17 and 62,653.17

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Solution

The fourth proportional to 212,431.95, 318,538.17 and 62,653.17 is: 93,947.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,431.95 : 318,538.17 = 62,653.17 : x
  2. Step 2: Convert to fraction form
    212,431.95/318,538.17 = 62,653.17/x
  3. Step 3: Cross multiply
    212,431.95x = 318,538.17 × 62,653.17
  4. Step 4: Simplify right side
    212,431.95x = 19,957,426,116.50
  5. Step 5: Solve for x
    x = 19,957,426,116.50/212,431.95
  6. Step 6: Final answer
    x = 93,947.38

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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.