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Finding the Fourth Proportional to 638,643.25, 957,686.71 and 183,133.83

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Solution

The fourth proportional to 638,643.25, 957,686.71 and 183,133.83 is: 274,620.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,643.25 : 957,686.71 = 183,133.83 : x
  2. Step 2: Convert to fraction form
    638,643.25/957,686.71 = 183,133.83/x
  3. Step 3: Cross multiply
    638,643.25x = 957,686.71 × 183,133.83
  4. Step 4: Simplify right side
    638,643.25x = 175,384,835,142.40
  5. Step 5: Solve for x
    x = 175,384,835,142.40/638,643.25
  6. Step 6: Final answer
    x = 274,620.98

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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.