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Finding the Fourth Proportional to 570,476.39, 855,816.30 and 191,520.45

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Solution

The fourth proportional to 570,476.39, 855,816.30 and 191,520.45 is: 287,314.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,476.39 : 855,816.30 = 191,520.45 : x
  2. Step 2: Convert to fraction form
    570,476.39/855,816.30 = 191,520.45/x
  3. Step 3: Cross multiply
    570,476.39x = 855,816.30 × 191,520.45
  4. Step 4: Simplify right side
    570,476.39x = 163,906,322,893.34
  5. Step 5: Solve for x
    x = 163,906,322,893.34/570,476.39
  6. Step 6: Final answer
    x = 287,314.83

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1.5x scale

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.