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Finding the Fourth Proportional to 75,781.69, 113,688.95 and 29,034.56

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Solution

The fourth proportional to 75,781.69, 113,688.95 and 29,034.56 is: 43,558.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,781.69 : 113,688.95 = 29,034.56 : x
  2. Step 2: Convert to fraction form
    75,781.69/113,688.95 = 29,034.56/x
  3. Step 3: Cross multiply
    75,781.69x = 113,688.95 × 29,034.56
  4. Step 4: Simplify right side
    75,781.69x = 3,300,908,779.16
  5. Step 5: Solve for x
    x = 3,300,908,779.16/75,781.69
  6. Step 6: Final answer
    x = 43,558.13

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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.