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Finding the Fourth Proportional to 1,265,895.78, 1,746,980.61 and 692,936.43

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Solution

The fourth proportional to 1,265,895.78, 1,746,980.61 and 692,936.43 is: 956,276.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,895.78 : 1,746,980.61 = 692,936.43 : x
  2. Step 2: Convert to fraction form
    1,265,895.78/1,746,980.61 = 692,936.43/x
  3. Step 3: Cross multiply
    1,265,895.78x = 1,746,980.61 × 692,936.43
  4. Step 4: Simplify right side
    1,265,895.78x = 1,210,546,507,172.62
  5. Step 5: Solve for x
    x = 1,210,546,507,172.62/1,265,895.78
  6. Step 6: Final answer
    x = 956,276.60

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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.