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Finding the Fourth Proportional to 239,703.48, 330,744.60 and 144,216.32

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Solution

The fourth proportional to 239,703.48, 330,744.60 and 144,216.32 is: 198,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,703.48 : 330,744.60 = 144,216.32 : x
  2. Step 2: Convert to fraction form
    239,703.48/330,744.60 = 144,216.32/x
  3. Step 3: Cross multiply
    239,703.48x = 330,744.60 × 144,216.32
  4. Step 4: Simplify right side
    239,703.48x = 47,698,769,071.87
  5. Step 5: Solve for x
    x = 47,698,769,071.87/239,703.48
  6. Step 6: Final answer
    x = 198,990.72

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1.5x scale

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.