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Finding the Fourth Proportional to 26,393,985.40, 39,590,978.10 and 22,142,457.40

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Solution

The fourth proportional to 26,393,985.40, 39,590,978.10 and 22,142,457.40 is: 33,213,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,393,985.40 : 39,590,978.10 = 22,142,457.40 : x
  2. Step 2: Convert to fraction form
    26,393,985.40/39,590,978.10 = 22,142,457.40/x
  3. Step 3: Cross multiply
    26,393,985.40x = 39,590,978.10 × 22,142,457.40
  4. Step 4: Simplify right side
    26,393,985.40x = 876,641,546,003,582.88
  5. Step 5: Solve for x
    x = 876,641,546,003,582.88/26,393,985.40
  6. Step 6: Final answer
    x = 33,213,686.10

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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.