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Finding the Fourth Proportional to 1,302,916.50, 1,797,981.30 and 722,114.88

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Solution

The fourth proportional to 1,302,916.50, 1,797,981.30 and 722,114.88 is: 996,494.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,916.50 : 1,797,981.30 = 722,114.88 : x
  2. Step 2: Convert to fraction form
    1,302,916.50/1,797,981.30 = 722,114.88/x
  3. Step 3: Cross multiply
    1,302,916.50x = 1,797,981.30 × 722,114.88
  4. Step 4: Simplify right side
    1,302,916.50x = 1,298,349,050,691.74
  5. Step 5: Solve for x
    x = 1,298,349,050,691.74/1,302,916.50
  6. Step 6: Final answer
    x = 996,494.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.