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Finding the Fourth Proportional to 705,856.60, 974,081.40 and 383,565.96

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Solution

The fourth proportional to 705,856.60, 974,081.40 and 383,565.96 is: 529,320.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,856.60 : 974,081.40 = 383,565.96 : x
  2. Step 2: Convert to fraction form
    705,856.60/974,081.40 = 383,565.96/x
  3. Step 3: Cross multiply
    705,856.60x = 974,081.40 × 383,565.96
  4. Step 4: Simplify right side
    705,856.60x = 373,624,467,309.14
  5. Step 5: Solve for x
    x = 373,624,467,309.14/705,856.60
  6. Step 6: Final answer
    x = 529,320.64

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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.