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Finding the Fourth Proportional to 18,831,997.60, 28,247,996.40 and 17,698,256.80

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Solution

The fourth proportional to 18,831,997.60, 28,247,996.40 and 17,698,256.80 is: 26,547,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831,997.60 : 28,247,996.40 = 17,698,256.80 : x
  2. Step 2: Convert to fraction form
    18,831,997.60/28,247,996.40 = 17,698,256.80/x
  3. Step 3: Cross multiply
    18,831,997.60x = 28,247,996.40 × 17,698,256.80
  4. Step 4: Simplify right side
    18,831,997.60x = 499,940,294,372,675.50
  5. Step 5: Solve for x
    x = 499,940,294,372,675.50/18,831,997.60
  6. Step 6: Final answer
    x = 26,547,385.20

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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.