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Finding the Fourth Proportional to 415,219.29, 622,828.95 and 99,676.20

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Solution

The fourth proportional to 415,219.29, 622,828.95 and 99,676.20 is: 149,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,219.29 : 622,828.95 = 99,676.20 : x
  2. Step 2: Convert to fraction form
    415,219.29/622,828.95 = 99,676.20/x
  3. Step 3: Cross multiply
    415,219.29x = 622,828.95 × 99,676.20
  4. Step 4: Simplify right side
    415,219.29x = 62,081,222,985.99
  5. Step 5: Solve for x
    x = 62,081,222,985.99/415,219.29
  6. Step 6: Final answer
    x = 149,514.30

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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.