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Finding the Fourth Proportional to 543,977.42, 815,965.98 and 170,000.42

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Solution

The fourth proportional to 543,977.42, 815,965.98 and 170,000.42 is: 255,000.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,977.42 : 815,965.98 = 170,000.42 : x
  2. Step 2: Convert to fraction form
    543,977.42/815,965.98 = 170,000.42/x
  3. Step 3: Cross multiply
    543,977.42x = 815,965.98 × 170,000.42
  4. Step 4: Simplify right side
    543,977.42x = 138,714,559,305.71
  5. Step 5: Solve for x
    x = 138,714,559,305.71/543,977.42
  6. Step 6: Final answer
    x = 255,000.58

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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.