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Finding the Fourth Proportional to 98,514.53, 135,950.21 and 56,073.06

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Solution

The fourth proportional to 98,514.53, 135,950.21 and 56,073.06 is: 77,380.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,514.53 : 135,950.21 = 56,073.06 : x
  2. Step 2: Convert to fraction form
    98,514.53/135,950.21 = 56,073.06/x
  3. Step 3: Cross multiply
    98,514.53x = 135,950.21 × 56,073.06
  4. Step 4: Simplify right side
    98,514.53x = 7,623,144,341.85
  5. Step 5: Solve for x
    x = 7,623,144,341.85/98,514.53
  6. Step 6: Final answer
    x = 77,380.91

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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.