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Finding the Fourth Proportional to 1,254,780.89, 1,731,608.00 and 681,821.06

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Solution

The fourth proportional to 1,254,780.89, 1,731,608.00 and 681,821.06 is: 940,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254,780.89 : 1,731,608.00 = 681,821.06 : x
  2. Step 2: Convert to fraction form
    1,254,780.89/1,731,608.00 = 681,821.06/x
  3. Step 3: Cross multiply
    1,254,780.89x = 1,731,608.00 × 681,821.06
  4. Step 4: Simplify right side
    1,254,780.89x = 1,180,646,804,543.14
  5. Step 5: Solve for x
    x = 1,180,646,804,543.14/1,254,780.89
  6. Step 6: Final answer
    x = 940,918.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.