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Finding the Fourth Proportional to 429,916.90, 644,874.56 and 114,373.80

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Solution

The fourth proportional to 429,916.90, 644,874.56 and 114,373.80 is: 171,560.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,916.90 : 644,874.56 = 114,373.80 : x
  2. Step 2: Convert to fraction form
    429,916.90/644,874.56 = 114,373.80/x
  3. Step 3: Cross multiply
    429,916.90x = 644,874.56 × 114,373.80
  4. Step 4: Simplify right side
    429,916.90x = 73,756,753,950.53
  5. Step 5: Solve for x
    x = 73,756,753,950.53/429,916.90
  6. Step 6: Final answer
    x = 171,560.49

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1.5x scale

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.