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Finding the Fourth Proportional to 655,349.81, 983,173.60 and 199,981.75

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Solution

The fourth proportional to 655,349.81, 983,173.60 and 199,981.75 is: 300,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,349.81 : 983,173.60 = 199,981.75 : x
  2. Step 2: Convert to fraction form
    655,349.81/983,173.60 = 199,981.75/x
  3. Step 3: Cross multiply
    655,349.81x = 983,173.60 × 199,981.75
  4. Step 4: Simplify right side
    655,349.81x = 196,616,774,209.81
  5. Step 5: Solve for x
    x = 196,616,774,209.81/655,349.81
  6. Step 6: Final answer
    x = 300,018.05

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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.