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Finding the Fourth Proportional to 91,153.75, 136,533.78 and 88,923.01

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Solution

The fourth proportional to 91,153.75, 136,533.78 and 88,923.01 is: 133,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,153.75 : 136,533.78 = 88,923.01 : x
  2. Step 2: Convert to fraction form
    91,153.75/136,533.78 = 88,923.01/x
  3. Step 3: Cross multiply
    91,153.75x = 136,533.78 × 88,923.01
  4. Step 4: Simplify right side
    91,153.75x = 12,140,994,684.28
  5. Step 5: Solve for x
    x = 12,140,994,684.28/91,153.75
  6. Step 6: Final answer
    x = 133,192.49

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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.