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Finding the Fourth Proportional to 74,796,985.60, 112,195,478.40 and 71,773,676.80

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Solution

The fourth proportional to 74,796,985.60, 112,195,478.40 and 71,773,676.80 is: 107,660,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,796,985.60 : 112,195,478.40 = 71,773,676.80 : x
  2. Step 2: Convert to fraction form
    74,796,985.60/112,195,478.40 = 71,773,676.80/x
  3. Step 3: Cross multiply
    74,796,985.60x = 112,195,478.40 × 71,773,676.80
  4. Step 4: Simplify right side
    74,796,985.60x = 8,052,682,005,102,981
  5. Step 5: Solve for x
    x = 8,052,682,005,102,981/74,796,985.60
  6. Step 6: Final answer
    x = 107,660,515.20

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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.