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Finding the Fourth Proportional to 72,693,109.80, 109,039,664.70 and 29,593,244.70

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Solution

The fourth proportional to 72,693,109.80, 109,039,664.70 and 29,593,244.70 is: 44,389,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,693,109.80 : 109,039,664.70 = 29,593,244.70 : x
  2. Step 2: Convert to fraction form
    72,693,109.80/109,039,664.70 = 29,593,244.70/x
  3. Step 3: Cross multiply
    72,693,109.80x = 109,039,664.70 × 29,593,244.70
  4. Step 4: Simplify right side
    72,693,109.80x = 3,226,837,479,473,052
  5. Step 5: Solve for x
    x = 3,226,837,479,473,052/72,693,109.80
  6. Step 6: Final answer
    x = 44,389,867.05

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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.