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Finding the Fourth Proportional to 98,843.34, 136,413.58 and 56,408.25

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Solution

The fourth proportional to 98,843.34, 136,413.58 and 56,408.25 is: 77,848.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,843.34 : 136,413.58 = 56,408.25 : x
  2. Step 2: Convert to fraction form
    98,843.34/136,413.58 = 56,408.25/x
  3. Step 3: Cross multiply
    98,843.34x = 136,413.58 × 56,408.25
  4. Step 4: Simplify right side
    98,843.34x = 7,694,851,324.04
  5. Step 5: Solve for x
    x = 7,694,851,324.04/98,843.34
  6. Step 6: Final answer
    x = 77,848.96

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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.