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Finding the Fourth Proportional to 1,241,936, 1,713,871.68 and 676,688

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Solution

The fourth proportional to 1,241,936, 1,713,871.68 and 676,688 is: 933,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241,936 : 1,713,871.68 = 676,688 : x
  2. Step 2: Convert to fraction form
    1,241,936/1,713,871.68 = 676,688/x
  3. Step 3: Cross multiply
    1,241,936x = 1,713,871.68 × 676,688
  4. Step 4: Simplify right side
    1,241,936x = 1,159,756,399,395.84
  5. Step 5: Solve for x
    x = 1,159,756,399,395.84/1,241,936
  6. Step 6: Final answer
    x = 933,829.44

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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.