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Finding the Fourth Proportional to 57,882,731.04, 79,879,104.72 and 31,779,655.20

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Solution

The fourth proportional to 57,882,731.04, 79,879,104.72 and 31,779,655.20 is: 43,856,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,882,731.04 : 79,879,104.72 = 31,779,655.20 : x
  2. Step 2: Convert to fraction form
    57,882,731.04/79,879,104.72 = 31,779,655.20/x
  3. Step 3: Cross multiply
    57,882,731.04x = 79,879,104.72 × 31,779,655.20
  4. Step 4: Simplify right side
    57,882,731.04x = 2,538,530,405,686,292.50
  5. Step 5: Solve for x
    x = 2,538,530,405,686,292.50/57,882,731.04
  6. Step 6: Final answer
    x = 43,856,438.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.