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Finding the Fourth Proportional to 705,928.78, 974,190.96 and 383,643.97

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Solution

The fourth proportional to 705,928.78, 974,190.96 and 383,643.97 is: 529,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,928.78 : 974,190.96 = 383,643.97 : x
  2. Step 2: Convert to fraction form
    705,928.78/974,190.96 = 383,643.97/x
  3. Step 3: Cross multiply
    705,928.78x = 974,190.96 × 383,643.97
  4. Step 4: Simplify right side
    705,928.78x = 373,742,487,432.51
  5. Step 5: Solve for x
    x = 373,742,487,432.51/705,928.78
  6. Step 6: Final answer
    x = 529,433.70

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1.5x scale

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.