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Finding the Fourth Proportional to 26,605,627.80, 39,808,793.70 and 18,946,978.20

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Solution

The fourth proportional to 26,605,627.80, 39,808,793.70 and 18,946,978.20 is: 28,349,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,605,627.80 : 39,808,793.70 = 18,946,978.20 : x
  2. Step 2: Convert to fraction form
    26,605,627.80/39,808,793.70 = 18,946,978.20/x
  3. Step 3: Cross multiply
    26,605,627.80x = 39,808,793.70 × 18,946,978.20
  4. Step 4: Simplify right side
    26,605,627.80x = 754,256,346,402,197.38
  5. Step 5: Solve for x
    x = 754,256,346,402,197.38/26,605,627.80
  6. Step 6: Final answer
    x = 28,349,503.80

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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.