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Finding the Fourth Proportional to 34,791,749.80, 52,187,624.70 and 20,421,701.80

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Solution

The fourth proportional to 34,791,749.80, 52,187,624.70 and 20,421,701.80 is: 30,632,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,791,749.80 : 52,187,624.70 = 20,421,701.80 : x
  2. Step 2: Convert to fraction form
    34,791,749.80/52,187,624.70 = 20,421,701.80/x
  3. Step 3: Cross multiply
    34,791,749.80x = 52,187,624.70 × 20,421,701.80
  4. Step 4: Simplify right side
    34,791,749.80x = 1,065,760,109,273,714.50
  5. Step 5: Solve for x
    x = 1,065,760,109,273,714.50/34,791,749.80
  6. Step 6: Final answer
    x = 30,632,552.70

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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.