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Finding the Fourth Proportional to 38,139,026.20, 57,208,539.30 and 38,139,026.20

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Solution

The fourth proportional to 38,139,026.20, 57,208,539.30 and 38,139,026.20 is: 57,208,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139,026.20 : 57,208,539.30 = 38,139,026.20 : x
  2. Step 2: Convert to fraction form
    38,139,026.20/57,208,539.30 = 38,139,026.20/x
  3. Step 3: Cross multiply
    38,139,026.20x = 57,208,539.30 × 38,139,026.20
  4. Step 4: Simplify right side
    38,139,026.20x = 2,181,877,979,226,429.75
  5. Step 5: Solve for x
    x = 2,181,877,979,226,429.75/38,139,026.20
  6. Step 6: Final answer
    x = 57,208,539.30

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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.