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Finding the Fourth Proportional to 705,992.74, 974,276.38 and 383,703.60

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Solution

The fourth proportional to 705,992.74, 974,276.38 and 383,703.60 is: 529,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,992.74 : 974,276.38 = 383,703.60 : x
  2. Step 2: Convert to fraction form
    705,992.74/974,276.38 = 383,703.60/x
  3. Step 3: Cross multiply
    705,992.74x = 974,276.38 × 383,703.60
  4. Step 4: Simplify right side
    705,992.74x = 373,833,354,400.97
  5. Step 5: Solve for x
    x = 373,833,354,400.97/705,992.74
  6. Step 6: Final answer
    x = 529,514.45

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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.