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Finding the Fourth Proportional to 479,816.66, 719,725.85 and 124,830.11

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Solution

The fourth proportional to 479,816.66, 719,725.85 and 124,830.11 is: 187,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,816.66 : 719,725.85 = 124,830.11 : x
  2. Step 2: Convert to fraction form
    479,816.66/719,725.85 = 124,830.11/x
  3. Step 3: Cross multiply
    479,816.66x = 719,725.85 × 124,830.11
  4. Step 4: Simplify right side
    479,816.66x = 89,843,457,025.34
  5. Step 5: Solve for x
    x = 89,843,457,025.34/479,816.66
  6. Step 6: Final answer
    x = 187,245.39

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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.