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Finding the Fourth Proportional to 66,453,315.60, 99,572,664.60 and 37,613,686.80

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Solution

The fourth proportional to 66,453,315.60, 99,572,664.60 and 37,613,686.80 is: 56,359,791.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,453,315.60 : 99,572,664.60 = 37,613,686.80 : x
  2. Step 2: Convert to fraction form
    66,453,315.60/99,572,664.60 = 37,613,686.80/x
  3. Step 3: Cross multiply
    66,453,315.60x = 99,572,664.60 × 37,613,686.80
  4. Step 4: Simplify right side
    66,453,315.60x = 3,745,295,020,105,847
  5. Step 5: Solve for x
    x = 3,745,295,020,105,847/66,453,315.60
  6. Step 6: Final answer
    x = 56,359,791.63

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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.