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Finding the Fourth Proportional to 159,317.40, 238,976.10 and 48,509.40

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Solution

The fourth proportional to 159,317.40, 238,976.10 and 48,509.40 is: 72,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,317.40 : 238,976.10 = 48,509.40 : x
  2. Step 2: Convert to fraction form
    159,317.40/238,976.10 = 48,509.40/x
  3. Step 3: Cross multiply
    159,317.40x = 238,976.10 × 48,509.40
  4. Step 4: Simplify right side
    159,317.40x = 11,592,587,225.34
  5. Step 5: Solve for x
    x = 11,592,587,225.34/159,317.40
  6. Step 6: Final answer
    x = 72,764.10

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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.