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Finding the Fourth Proportional to 57,665.40, 86,627.70 and 56,110.20

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Solution

The fourth proportional to 57,665.40, 86,627.70 and 56,110.20 is: 84,291.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,665.40 : 86,627.70 = 56,110.20 : x
  2. Step 2: Convert to fraction form
    57,665.40/86,627.70 = 56,110.20/x
  3. Step 3: Cross multiply
    57,665.40x = 86,627.70 × 56,110.20
  4. Step 4: Simplify right side
    57,665.40x = 4,860,697,572.54
  5. Step 5: Solve for x
    x = 4,860,697,572.54/57,665.40
  6. Step 6: Final answer
    x = 84,291.40

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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.