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Finding the Fourth Proportional to 66,071.19, 99,106.83 and 19,324.11

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Solution

The fourth proportional to 66,071.19, 99,106.83 and 19,324.11 is: 28,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,071.19 : 99,106.83 = 19,324.11 : x
  2. Step 2: Convert to fraction form
    66,071.19/99,106.83 = 19,324.11/x
  3. Step 3: Cross multiply
    66,071.19x = 99,106.83 × 19,324.11
  4. Step 4: Simplify right side
    66,071.19x = 1,915,151,284.67
  5. Step 5: Solve for x
    x = 1,915,151,284.67/66,071.19
  6. Step 6: Final answer
    x = 28,986.18

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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.