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Finding the Fourth Proportional to 100,368,625.80, 150,552,938.70 and 54,452,123.40

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Solution

The fourth proportional to 100,368,625.80, 150,552,938.70 and 54,452,123.40 is: 81,678,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,368,625.80 : 150,552,938.70 = 54,452,123.40 : x
  2. Step 2: Convert to fraction form
    100,368,625.80/150,552,938.70 = 54,452,123.40/x
  3. Step 3: Cross multiply
    100,368,625.80x = 150,552,938.70 × 54,452,123.40
  4. Step 4: Simplify right side
    100,368,625.80x = 8,197,927,196,325,035
  5. Step 5: Solve for x
    x = 8,197,927,196,325,035/100,368,625.80
  6. Step 6: Final answer
    x = 81,678,185.10

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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.