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Finding the Fourth Proportional to 159,346.40, 238,908.80 and 70,551.42

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Solution

The fourth proportional to 159,346.40, 238,908.80 and 70,551.42 is: 105,778.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,346.40 : 238,908.80 = 70,551.42 : x
  2. Step 2: Convert to fraction form
    159,346.40/238,908.80 = 70,551.42/x
  3. Step 3: Cross multiply
    159,346.40x = 238,908.80 × 70,551.42
  4. Step 4: Simplify right side
    159,346.40x = 16,855,355,090.50
  5. Step 5: Solve for x
    x = 16,855,355,090.50/159,346.40
  6. Step 6: Final answer
    x = 105,778.07

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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.