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Finding the Fourth Proportional to 57,705.60, 86,574.60 and 28,124.40

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Solution

The fourth proportional to 57,705.60, 86,574.60 and 28,124.40 is: 42,194.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,705.60 : 86,574.60 = 28,124.40 : x
  2. Step 2: Convert to fraction form
    57,705.60/86,574.60 = 28,124.40/x
  3. Step 3: Cross multiply
    57,705.60x = 86,574.60 × 28,124.40
  4. Step 4: Simplify right side
    57,705.60x = 2,434,858,680.24
  5. Step 5: Solve for x
    x = 2,434,858,680.24/57,705.60
  6. Step 6: Final answer
    x = 42,194.50

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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.