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Finding the Fourth Proportional to 66,420.66, 99,609.32 and 22,035.50

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Solution

The fourth proportional to 66,420.66, 99,609.32 and 22,035.50 is: 33,046.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420.66 : 99,609.32 = 22,035.50 : x
  2. Step 2: Convert to fraction form
    66,420.66/99,609.32 = 22,035.50/x
  3. Step 3: Cross multiply
    66,420.66x = 99,609.32 × 22,035.50
  4. Step 4: Simplify right side
    66,420.66x = 2,194,940,672.81
  5. Step 5: Solve for x
    x = 2,194,940,672.81/66,420.66
  6. Step 6: Final answer
    x = 33,046.05

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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.