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Finding the Fourth Proportional to 1,266,865.93, 1,748,253.37 and 686,084.35

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Solution

The fourth proportional to 1,266,865.93, 1,748,253.37 and 686,084.35 is: 946,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,865.93 : 1,748,253.37 = 686,084.35 : x
  2. Step 2: Convert to fraction form
    1,266,865.93/1,748,253.37 = 686,084.35/x
  3. Step 3: Cross multiply
    1,266,865.93x = 1,748,253.37 × 686,084.35
  4. Step 4: Simplify right side
    1,266,865.93x = 1,199,449,276,991.76
  5. Step 5: Solve for x
    x = 1,199,449,276,991.76/1,266,865.93
  6. Step 6: Final answer
    x = 946,784.70

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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.