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Finding the Fourth Proportional to 557,916.66, 769,925.50 and 303,267.85

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Solution

The fourth proportional to 557,916.66, 769,925.50 and 303,267.85 is: 418,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,916.66 : 769,925.50 = 303,267.85 : x
  2. Step 2: Convert to fraction form
    557,916.66/769,925.50 = 303,267.85/x
  3. Step 3: Cross multiply
    557,916.66x = 769,925.50 × 303,267.85
  4. Step 4: Simplify right side
    557,916.66x = 233,493,651,045.18
  5. Step 5: Solve for x
    x = 233,493,651,045.18/557,916.66
  6. Step 6: Final answer
    x = 418,509.91

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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.