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Finding the Fourth Proportional to 171,878.40, 257,787.84 and 47,190.24

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Solution

The fourth proportional to 171,878.40, 257,787.84 and 47,190.24 is: 70,777.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,878.40 : 257,787.84 = 47,190.24 : x
  2. Step 2: Convert to fraction form
    171,878.40/257,787.84 = 47,190.24/x
  3. Step 3: Cross multiply
    171,878.40x = 257,787.84 × 47,190.24
  4. Step 4: Simplify right side
    171,878.40x = 12,165,070,038.68
  5. Step 5: Solve for x
    x = 12,165,070,038.68/171,878.40
  6. Step 6: Final answer
    x = 70,777.19

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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.