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Finding the Fourth Proportional to 128,024.52, 191,779.56 and 63,788.91

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Solution

The fourth proportional to 128,024.52, 191,779.56 and 63,788.91 is: 95,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,024.52 : 191,779.56 = 63,788.91 : x
  2. Step 2: Convert to fraction form
    128,024.52/191,779.56 = 63,788.91/x
  3. Step 3: Cross multiply
    128,024.52x = 191,779.56 × 63,788.91
  4. Step 4: Simplify right side
    128,024.52x = 12,233,409,092.68
  5. Step 5: Solve for x
    x = 12,233,409,092.68/128,024.52
  6. Step 6: Final answer
    x = 95,555.20

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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.