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Finding the Fourth Proportional to 393,364.80, 590,001.84 and 109,076.40

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Solution

The fourth proportional to 393,364.80, 590,001.84 and 109,076.40 is: 163,602.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,364.80 : 590,001.84 = 109,076.40 : x
  2. Step 2: Convert to fraction form
    393,364.80/590,001.84 = 109,076.40/x
  3. Step 3: Cross multiply
    393,364.80x = 590,001.84 × 109,076.40
  4. Step 4: Simplify right side
    393,364.80x = 64,355,276,700.58
  5. Step 5: Solve for x
    x = 64,355,276,700.58/393,364.80
  6. Step 6: Final answer
    x = 163,602.02

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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.