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Finding the Fourth Proportional to 1,254,685.86, 1,731,441.56 and 681,730.16

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Solution

The fourth proportional to 1,254,685.86, 1,731,441.56 and 681,730.16 is: 940,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254,685.86 : 1,731,441.56 = 681,730.16 : x
  2. Step 2: Convert to fraction form
    1,254,685.86/1,731,441.56 = 681,730.16/x
  3. Step 3: Cross multiply
    1,254,685.86x = 1,731,441.56 × 681,730.16
  4. Step 4: Simplify right side
    1,254,685.86x = 1,180,375,919,663.59
  5. Step 5: Solve for x
    x = 1,180,375,919,663.59/1,254,685.86
  6. Step 6: Final answer
    x = 940,774.07

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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.