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Finding the Fourth Proportional to 212,672.28, 319,070.70 and 62,916.54

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Solution

The fourth proportional to 212,672.28, 319,070.70 and 62,916.54 is: 94,393.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,672.28 : 319,070.70 = 62,916.54 : x
  2. Step 2: Convert to fraction form
    212,672.28/319,070.70 = 62,916.54/x
  3. Step 3: Cross multiply
    212,672.28x = 319,070.70 × 62,916.54
  4. Step 4: Simplify right side
    212,672.28x = 20,074,824,459.38
  5. Step 5: Solve for x
    x = 20,074,824,459.38/212,672.28
  6. Step 6: Final answer
    x = 94,393.23

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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.