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Finding the Fourth Proportional to 34,784,897.80, 52,177,346.70 and 21,851,854.60

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Solution

The fourth proportional to 34,784,897.80, 52,177,346.70 and 21,851,854.60 is: 32,777,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,784,897.80 : 52,177,346.70 = 21,851,854.60 : x
  2. Step 2: Convert to fraction form
    34,784,897.80/52,177,346.70 = 21,851,854.60/x
  3. Step 3: Cross multiply
    34,784,897.80x = 52,177,346.70 × 21,851,854.60
  4. Step 4: Simplify right side
    34,784,897.80x = 1,140,171,793,502,190
  5. Step 5: Solve for x
    x = 1,140,171,793,502,190/34,784,897.80
  6. Step 6: Final answer
    x = 32,777,781.90

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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.