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Finding the Fourth Proportional to 66,355.23, 99,549.71 and 19,608.11

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Solution

The fourth proportional to 66,355.23, 99,549.71 and 19,608.11 is: 29,417.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.23 : 99,549.71 = 19,608.11 : x
  2. Step 2: Convert to fraction form
    66,355.23/99,549.71 = 19,608.11/x
  3. Step 3: Cross multiply
    66,355.23x = 99,549.71 × 19,608.11
  4. Step 4: Simplify right side
    66,355.23x = 1,951,981,068.36
  5. Step 5: Solve for x
    x = 1,951,981,068.36/66,355.23
  6. Step 6: Final answer
    x = 29,417.14

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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.