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Finding the Fourth Proportional to 237,903.15, 356,928.78 and 77,980.50

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Solution

The fourth proportional to 237,903.15, 356,928.78 and 77,980.50 is: 116,995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,903.15 : 356,928.78 = 77,980.50 : x
  2. Step 2: Convert to fraction form
    237,903.15/356,928.78 = 77,980.50/x
  3. Step 3: Cross multiply
    237,903.15x = 356,928.78 × 77,980.50
  4. Step 4: Simplify right side
    237,903.15x = 27,833,484,728.79
  5. Step 5: Solve for x
    x = 27,833,484,728.79/237,903.15
  6. Step 6: Final answer
    x = 116,995.02

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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.