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Finding the Fourth Proportional to 103,699.48, 155,505.19 and 43,754.85

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Solution

The fourth proportional to 103,699.48, 155,505.19 and 43,754.85 is: 65,613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.48 : 155,505.19 = 43,754.85 : x
  2. Step 2: Convert to fraction form
    103,699.48/155,505.19 = 43,754.85/x
  3. Step 3: Cross multiply
    103,699.48x = 155,505.19 × 43,754.85
  4. Step 4: Simplify right side
    103,699.48x = 6,804,106,262.67
  5. Step 5: Solve for x
    x = 6,804,106,262.67/103,699.48
  6. Step 6: Final answer
    x = 65,613.70

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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.