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Finding the Fourth Proportional to 26,411,978.60, 39,617,967.90 and 7,244,673.20

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Solution

The fourth proportional to 26,411,978.60, 39,617,967.90 and 7,244,673.20 is: 10,867,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,411,978.60 : 39,617,967.90 = 7,244,673.20 : x
  2. Step 2: Convert to fraction form
    26,411,978.60/39,617,967.90 = 7,244,673.20/x
  3. Step 3: Cross multiply
    26,411,978.60x = 39,617,967.90 × 7,244,673.20
  4. Step 4: Simplify right side
    26,411,978.60x = 287,019,230,283,590.25
  5. Step 5: Solve for x
    x = 287,019,230,283,590.25/26,411,978.60
  6. Step 6: Final answer
    x = 10,867,009.80

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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.