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Finding the Fourth Proportional to 19,583,991.40, 29,375,987.10 and 18,256,887.40

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Solution

The fourth proportional to 19,583,991.40, 29,375,987.10 and 18,256,887.40 is: 27,385,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,583,991.40 : 29,375,987.10 = 18,256,887.40 : x
  2. Step 2: Convert to fraction form
    19,583,991.40/29,375,987.10 = 18,256,887.40/x
  3. Step 3: Cross multiply
    19,583,991.40x = 29,375,987.10 × 18,256,887.40
  4. Step 4: Simplify right side
    19,583,991.40x = 536,314,088,748,552.50
  5. Step 5: Solve for x
    x = 536,314,088,748,552.50/19,583,991.40
  6. Step 6: Final answer
    x = 27,385,331.10

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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.