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Finding the Fourth Proportional to 157,859.80, 236,444.10 and 140,349.40

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Solution

The fourth proportional to 157,859.80, 236,444.10 and 140,349.40 is: 210,216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,859.80 : 236,444.10 = 140,349.40 : x
  2. Step 2: Convert to fraction form
    157,859.80/236,444.10 = 140,349.40/x
  3. Step 3: Cross multiply
    157,859.80x = 236,444.10 × 140,349.40
  4. Step 4: Simplify right side
    157,859.80x = 33,184,787,568.54
  5. Step 5: Solve for x
    x = 33,184,787,568.54/157,859.80
  6. Step 6: Final answer
    x = 210,216.84

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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.