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Finding the Fourth Proportional to 1,891,243.60, 2,558,155.50 and 1,891,243.60

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Solution

The fourth proportional to 1,891,243.60, 2,558,155.50 and 1,891,243.60 is: 2,558,155.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891,243.60 : 2,558,155.50 = 1,891,243.60 : x
  2. Step 2: Convert to fraction form
    1,891,243.60/2,558,155.50 = 1,891,243.60/x
  3. Step 3: Cross multiply
    1,891,243.60x = 2,558,155.50 × 1,891,243.60
  4. Step 4: Simplify right side
    1,891,243.60x = 4,838,095,217,179.80
  5. Step 5: Solve for x
    x = 4,838,095,217,179.80/1,891,243.60
  6. Step 6: Final answer
    x = 2,558,155.50

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.