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Finding the Fourth Proportional to 416,482.90, 624,724.36 and 100,939.81

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Solution

The fourth proportional to 416,482.90, 624,724.36 and 100,939.81 is: 151,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,482.90 : 624,724.36 = 100,939.81 : x
  2. Step 2: Convert to fraction form
    416,482.90/624,724.36 = 100,939.81/x
  3. Step 3: Cross multiply
    416,482.90x = 624,724.36 × 100,939.81
  4. Step 4: Simplify right side
    416,482.90x = 63,059,558,200.77
  5. Step 5: Solve for x
    x = 63,059,558,200.77/416,482.90
  6. Step 6: Final answer
    x = 151,409.72

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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.