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Finding the Fourth Proportional to 393,977.60, 590,966.40 and 244,678.40

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Solution

The fourth proportional to 393,977.60, 590,966.40 and 244,678.40 is: 367,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,977.60 : 590,966.40 = 244,678.40 : x
  2. Step 2: Convert to fraction form
    393,977.60/590,966.40 = 244,678.40/x
  3. Step 3: Cross multiply
    393,977.60x = 590,966.40 × 244,678.40
  4. Step 4: Simplify right side
    393,977.60x = 144,596,713,205.76
  5. Step 5: Solve for x
    x = 144,596,713,205.76/393,977.60
  6. Step 6: Final answer
    x = 367,017.60

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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.