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Finding the Fourth Proportional to 922,743.60, 1,271,496.60 and 680,642.70

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Solution

The fourth proportional to 922,743.60, 1,271,496.60 and 680,642.70 is: 937,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,743.60 : 1,271,496.60 = 680,642.70 : x
  2. Step 2: Convert to fraction form
    922,743.60/1,271,496.60 = 680,642.70/x
  3. Step 3: Cross multiply
    922,743.60x = 1,271,496.60 × 680,642.70
  4. Step 4: Simplify right side
    922,743.60x = 865,434,878,864.82
  5. Step 5: Solve for x
    x = 865,434,878,864.82/922,743.60
  6. Step 6: Final answer
    x = 937,893.13

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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.