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Finding the Fourth Proportional to 98,843.16, 136,413.32 and 56,408.07

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Solution

The fourth proportional to 98,843.16, 136,413.32 and 56,408.07 is: 77,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,843.16 : 136,413.32 = 56,408.07 : x
  2. Step 2: Convert to fraction form
    98,843.16/136,413.32 = 56,408.07/x
  3. Step 3: Cross multiply
    98,843.16x = 136,413.32 × 56,408.07
  4. Step 4: Simplify right side
    98,843.16x = 7,694,811,562.45
  5. Step 5: Solve for x
    x = 7,694,811,562.45/98,843.16
  6. Step 6: Final answer
    x = 77,848.70

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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.