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Finding the Fourth Proportional to 1,997,945.40, 2,996,918.10 and 876,014.40

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Solution

The fourth proportional to 1,997,945.40, 2,996,918.10 and 876,014.40 is: 1,314,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997,945.40 : 2,996,918.10 = 876,014.40 : x
  2. Step 2: Convert to fraction form
    1,997,945.40/2,996,918.10 = 876,014.40/x
  3. Step 3: Cross multiply
    1,997,945.40x = 2,996,918.10 × 876,014.40
  4. Step 4: Simplify right side
    1,997,945.40x = 2,625,343,411,220.64
  5. Step 5: Solve for x
    x = 2,625,343,411,220.64/1,997,945.40
  6. Step 6: Final answer
    x = 1,314,021.60

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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.