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Finding the Fourth Proportional to 236,015.42, 353,946.57 and 78,201.50

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Solution

The fourth proportional to 236,015.42, 353,946.57 and 78,201.50 is: 117,276.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,015.42 : 353,946.57 = 78,201.50 : x
  2. Step 2: Convert to fraction form
    236,015.42/353,946.57 = 78,201.50/x
  3. Step 3: Cross multiply
    236,015.42x = 353,946.57 × 78,201.50
  4. Step 4: Simplify right side
    236,015.42x = 27,679,152,693.86
  5. Step 5: Solve for x
    x = 27,679,152,693.86/236,015.42
  6. Step 6: Final answer
    x = 117,276.88

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1.5x scale

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.