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Finding the Fourth Proportional to 18,085,903.20, 27,128,417.40 and 10,891,985.40

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Solution

The fourth proportional to 18,085,903.20, 27,128,417.40 and 10,891,985.40 is: 16,337,714.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085,903.20 : 27,128,417.40 = 10,891,985.40 : x
  2. Step 2: Convert to fraction form
    18,085,903.20/27,128,417.40 = 10,891,985.40/x
  3. Step 3: Cross multiply
    18,085,903.20x = 27,128,417.40 × 10,891,985.40
  4. Step 4: Simplify right side
    18,085,903.20x = 295,482,326,245,905.94
  5. Step 5: Solve for x
    x = 295,482,326,245,905.94/18,085,903.20
  6. Step 6: Final answer
    x = 16,337,714.68

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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.