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Finding the Fourth Proportional to 98,842.44, 136,404.90 and 56,404.92

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Solution

The fourth proportional to 98,842.44, 136,404.90 and 56,404.92 is: 77,840.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,842.44 : 136,404.90 = 56,404.92 : x
  2. Step 2: Convert to fraction form
    98,842.44/136,404.90 = 56,404.92/x
  3. Step 3: Cross multiply
    98,842.44x = 136,404.90 × 56,404.92
  4. Step 4: Simplify right side
    98,842.44x = 7,693,907,472.11
  5. Step 5: Solve for x
    x = 7,693,907,472.11/98,842.44
  6. Step 6: Final answer
    x = 77,840.12

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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.