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Finding the Fourth Proportional to 83,603.70, 115,412.79 and 52,992.09

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Solution

The fourth proportional to 83,603.70, 115,412.79 and 52,992.09 is: 73,154.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,603.70 : 115,412.79 = 52,992.09 : x
  2. Step 2: Convert to fraction form
    83,603.70/115,412.79 = 52,992.09/x
  3. Step 3: Cross multiply
    83,603.70x = 115,412.79 × 52,992.09
  4. Step 4: Simplify right side
    83,603.70x = 6,115,964,954.83
  5. Step 5: Solve for x
    x = 6,115,964,954.83/83,603.70
  6. Step 6: Final answer
    x = 73,154.24

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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.