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Finding the Fourth Proportional to 706,161.78, 974,509.53 and 383,872.40

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Solution

The fourth proportional to 706,161.78, 974,509.53 and 383,872.40 is: 529,747.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,161.78 : 974,509.53 = 383,872.40 : x
  2. Step 2: Convert to fraction form
    706,161.78/974,509.53 = 383,872.40/x
  3. Step 3: Cross multiply
    706,161.78x = 974,509.53 × 383,872.40
  4. Step 4: Simplify right side
    706,161.78x = 374,087,307,231.42
  5. Step 5: Solve for x
    x = 374,087,307,231.42/706,161.78
  6. Step 6: Final answer
    x = 529,747.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.