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Finding the Fourth Proportional to 34,784,212.80, 52,160,572.80 and 13,211,644.80

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Solution

The fourth proportional to 34,784,212.80, 52,160,572.80 and 13,211,644.80 is: 19,811,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,784,212.80 : 52,160,572.80 = 13,211,644.80 : x
  2. Step 2: Convert to fraction form
    34,784,212.80/52,160,572.80 = 13,211,644.80/x
  3. Step 3: Cross multiply
    34,784,212.80x = 52,160,572.80 × 13,211,644.80
  4. Step 4: Simplify right side
    34,784,212.80x = 689,126,960,398,141.50
  5. Step 5: Solve for x
    x = 689,126,960,398,141.50/34,784,212.80
  6. Step 6: Final answer
    x = 19,811,486.45

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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.