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Finding the Fourth Proportional to 173,859.60, 260,724.60 and 121,112.40

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Solution

The fourth proportional to 173,859.60, 260,724.60 and 121,112.40 is: 181,623.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,859.60 : 260,724.60 = 121,112.40 : x
  2. Step 2: Convert to fraction form
    173,859.60/260,724.60 = 121,112.40/x
  3. Step 3: Cross multiply
    173,859.60x = 260,724.60 × 121,112.40
  4. Step 4: Simplify right side
    173,859.60x = 31,576,982,045.04
  5. Step 5: Solve for x
    x = 31,576,982,045.04/173,859.60
  6. Step 6: Final answer
    x = 181,623.46

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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.