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Finding the Fourth Proportional to 38,851,490.15, 54,471,712.45 and 38,851,490.15

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Solution

The fourth proportional to 38,851,490.15, 54,471,712.45 and 38,851,490.15 is: 54,471,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,851,490.15 : 54,471,712.45 = 38,851,490.15 : x
  2. Step 2: Convert to fraction form
    38,851,490.15/54,471,712.45 = 38,851,490.15/x
  3. Step 3: Cross multiply
    38,851,490.15x = 54,471,712.45 × 38,851,490.15
  4. Step 4: Simplify right side
    38,851,490.15x = 2,116,307,199,704,807.50
  5. Step 5: Solve for x
    x = 2,116,307,199,704,807.50/38,851,490.15
  6. Step 6: Final answer
    x = 54,471,712.45

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.