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Finding the Fourth Proportional to 423,840.12, 584,639.94 and 251,641.27

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Solution

The fourth proportional to 423,840.12, 584,639.94 and 251,641.27 is: 347,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,840.12 : 584,639.94 = 251,641.27 : x
  2. Step 2: Convert to fraction form
    423,840.12/584,639.94 = 251,641.27/x
  3. Step 3: Cross multiply
    423,840.12x = 584,639.94 × 251,641.27
  4. Step 4: Simplify right side
    423,840.12x = 147,119,536,994.32
  5. Step 5: Solve for x
    x = 147,119,536,994.32/423,840.12
  6. Step 6: Final answer
    x = 347,110.93

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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.