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Finding the Fourth Proportional to 553,068.70, 829,418.52 and 216,021.93

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Solution

The fourth proportional to 553,068.70, 829,418.52 and 216,021.93 is: 323,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,068.70 : 829,418.52 = 216,021.93 : x
  2. Step 2: Convert to fraction form
    553,068.70/829,418.52 = 216,021.93/x
  3. Step 3: Cross multiply
    553,068.70x = 829,418.52 × 216,021.93
  4. Step 4: Simplify right side
    553,068.70x = 179,172,584,240.94
  5. Step 5: Solve for x
    x = 179,172,584,240.94/553,068.70
  6. Step 6: Final answer
    x = 323,960.81

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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.