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Finding the Fourth Proportional to 66,166.74, 99,251.73 and 19,421.10

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Solution

The fourth proportional to 66,166.74, 99,251.73 and 19,421.10 is: 29,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,166.74 : 99,251.73 = 19,421.10 : x
  2. Step 2: Convert to fraction form
    66,166.74/99,251.73 = 19,421.10/x
  3. Step 3: Cross multiply
    66,166.74x = 99,251.73 × 19,421.10
  4. Step 4: Simplify right side
    66,166.74x = 1,927,577,773.50
  5. Step 5: Solve for x
    x = 1,927,577,773.50/66,166.74
  6. Step 6: Final answer
    x = 29,132.13

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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.