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Finding the Fourth Proportional to 98,797.38, 136,339.11 and 56,356.62

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Solution

The fourth proportional to 98,797.38, 136,339.11 and 56,356.62 is: 77,771.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,797.38 : 136,339.11 = 56,356.62 : x
  2. Step 2: Convert to fraction form
    98,797.38/136,339.11 = 56,356.62/x
  3. Step 3: Cross multiply
    98,797.38x = 136,339.11 × 56,356.62
  4. Step 4: Simplify right side
    98,797.38x = 7,683,611,413.41
  5. Step 5: Solve for x
    x = 7,683,611,413.41/98,797.38
  6. Step 6: Final answer
    x = 77,771.41

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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.