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Finding the Fourth Proportional to 17,387,985.60, 26,081,978.40 and 11,005,444.80

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Solution

The fourth proportional to 17,387,985.60, 26,081,978.40 and 11,005,444.80 is: 16,508,167.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,387,985.60 : 26,081,978.40 = 11,005,444.80 : x
  2. Step 2: Convert to fraction form
    17,387,985.60/26,081,978.40 = 11,005,444.80/x
  3. Step 3: Cross multiply
    17,387,985.60x = 26,081,978.40 × 11,005,444.80
  4. Step 4: Simplify right side
    17,387,985.60x = 287,043,773,555,992.31
  5. Step 5: Solve for x
    x = 287,043,773,555,992.31/17,387,985.60
  6. Step 6: Final answer
    x = 16,508,167.20

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1.5x scale

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.