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Finding the Fourth Proportional to 65,620.35, 90,508.14 and 42,922.94

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Solution

The fourth proportional to 65,620.35, 90,508.14 and 42,922.94 is: 59,202.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,620.35 : 90,508.14 = 42,922.94 : x
  2. Step 2: Convert to fraction form
    65,620.35/90,508.14 = 42,922.94/x
  3. Step 3: Cross multiply
    65,620.35x = 90,508.14 × 42,922.94
  4. Step 4: Simplify right side
    65,620.35x = 3,884,875,010.19
  5. Step 5: Solve for x
    x = 3,884,875,010.19/65,620.35
  6. Step 6: Final answer
    x = 59,202.29

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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.