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Finding the Fourth Proportional to 55,666.96, 76,821.48 and 30,514.96

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Solution

The fourth proportional to 55,666.96, 76,821.48 and 30,514.96 is: 42,111.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,666.96 : 76,821.48 = 30,514.96 : x
  2. Step 2: Convert to fraction form
    55,666.96/76,821.48 = 30,514.96/x
  3. Step 3: Cross multiply
    55,666.96x = 76,821.48 × 30,514.96
  4. Step 4: Simplify right side
    55,666.96x = 2,344,204,389.34
  5. Step 5: Solve for x
    x = 2,344,204,389.34/55,666.96
  6. Step 6: Final answer
    x = 42,111.23

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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.