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Finding the Fourth Proportional to 261,063.98, 391,653.37 and 83,588.93

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Solution

The fourth proportional to 261,063.98, 391,653.37 and 83,588.93 is: 125,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,063.98 : 391,653.37 = 83,588.93 : x
  2. Step 2: Convert to fraction form
    261,063.98/391,653.37 = 83,588.93/x
  3. Step 3: Cross multiply
    261,063.98x = 391,653.37 × 83,588.93
  4. Step 4: Simplify right side
    261,063.98x = 32,737,884,170.93
  5. Step 5: Solve for x
    x = 32,737,884,170.93/261,063.98
  6. Step 6: Final answer
    x = 125,401.77

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1.5x scale

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.