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Finding the Fourth Proportional to 172,530.77, 258,421.88 and 83,597.76

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Solution

The fourth proportional to 172,530.77, 258,421.88 and 83,597.76 is: 125,215.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,530.77 : 258,421.88 = 83,597.76 : x
  2. Step 2: Convert to fraction form
    172,530.77/258,421.88 = 83,597.76/x
  3. Step 3: Cross multiply
    172,530.77x = 258,421.88 × 83,597.76
  4. Step 4: Simplify right side
    172,530.77x = 21,603,489,885
  5. Step 5: Solve for x
    x = 21,603,489,885/172,530.77
  6. Step 6: Final answer
    x = 125,215.29

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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.