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Finding the Fourth Proportional to 99,793,857.40, 149,578,811.70 and 56,683,713.40

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Solution

The fourth proportional to 99,793,857.40, 149,578,811.70 and 56,683,713.40 is: 84,961,967.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,793,857.40 : 149,578,811.70 = 56,683,713.40 : x
  2. Step 2: Convert to fraction form
    99,793,857.40/149,578,811.70 = 56,683,713.40/x
  3. Step 3: Cross multiply
    99,793,857.40x = 149,578,811.70 × 56,683,713.40
  4. Step 4: Simplify right side
    99,793,857.40x = 8,478,682,493,115,366
  5. Step 5: Solve for x
    x = 8,478,682,493,115,366/99,793,857.40
  6. Step 6: Final answer
    x = 84,961,967.74

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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.