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Finding the Fourth Proportional to 59,426,745.78, 81,978,727.41 and 38,812,258.74

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Solution

The fourth proportional to 59,426,745.78, 81,978,727.41 and 38,812,258.74 is: 53,541,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,426,745.78 : 81,978,727.41 = 38,812,258.74 : x
  2. Step 2: Convert to fraction form
    59,426,745.78/81,978,727.41 = 38,812,258.74/x
  3. Step 3: Cross multiply
    59,426,745.78x = 81,978,727.41 × 38,812,258.74
  4. Step 4: Simplify right side
    59,426,745.78x = 3,181,779,579,412,850
  5. Step 5: Solve for x
    x = 3,181,779,579,412,850/59,426,745.78
  6. Step 6: Final answer
    x = 53,541,205.02

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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.