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Finding the Fourth Proportional to 1,738,889.80, 2,607,459.90 and 1,029,135.40

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Solution

The fourth proportional to 1,738,889.80, 2,607,459.90 and 1,029,135.40 is: 1,543,185.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738,889.80 : 2,607,459.90 = 1,029,135.40 : x
  2. Step 2: Convert to fraction form
    1,738,889.80/2,607,459.90 = 1,029,135.40/x
  3. Step 3: Cross multiply
    1,738,889.80x = 2,607,459.90 × 1,029,135.40
  4. Step 4: Simplify right side
    1,738,889.80x = 2,683,429,287,170.46
  5. Step 5: Solve for x
    x = 2,683,429,287,170.46/1,738,889.80
  6. Step 6: Final answer
    x = 1,543,185.36

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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.