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Finding the Fourth Proportional to 26,600,412.60, 39,897,666.45 and 21,799,728.90

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Solution

The fourth proportional to 26,600,412.60, 39,897,666.45 and 21,799,728.90 is: 32,697,173.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,600,412.60 : 39,897,666.45 = 21,799,728.90 : x
  2. Step 2: Convert to fraction form
    26,600,412.60/39,897,666.45 = 21,799,728.90/x
  3. Step 3: Cross multiply
    26,600,412.60x = 39,897,666.45 × 21,799,728.90
  4. Step 4: Simplify right side
    26,600,412.60x = 869,758,312,352,625.38
  5. Step 5: Solve for x
    x = 869,758,312,352,625.38/26,600,412.60
  6. Step 6: Final answer
    x = 32,697,173.74

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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.