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Finding the Fourth Proportional to 66,353.44, 99,573.68 and 31,303.20

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Solution

The fourth proportional to 66,353.44, 99,573.68 and 31,303.20 is: 46,975.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,353.44 : 99,573.68 = 31,303.20 : x
  2. Step 2: Convert to fraction form
    66,353.44/99,573.68 = 31,303.20/x
  3. Step 3: Cross multiply
    66,353.44x = 99,573.68 × 31,303.20
  4. Step 4: Simplify right side
    66,353.44x = 3,116,974,819.78
  5. Step 5: Solve for x
    x = 3,116,974,819.78/66,353.44
  6. Step 6: Final answer
    x = 46,975.33

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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.