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Finding the Fourth Proportional to 119,521.71, 164,936.25 and 65,801.70

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Solution

The fourth proportional to 119,521.71, 164,936.25 and 65,801.70 is: 90,804.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,521.71 : 164,936.25 = 65,801.70 : x
  2. Step 2: Convert to fraction form
    119,521.71/164,936.25 = 65,801.70/x
  3. Step 3: Cross multiply
    119,521.71x = 164,936.25 × 65,801.70
  4. Step 4: Simplify right side
    119,521.71x = 10,853,085,641.63
  5. Step 5: Solve for x
    x = 10,853,085,641.63/119,521.71
  6. Step 6: Final answer
    x = 90,804.30

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1.5x scale

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.