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Finding the Fourth Proportional to 1,361,112, 1,878,358.45 and 740,935

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Solution

The fourth proportional to 1,361,112, 1,878,358.45 and 740,935 is: 1,022,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,112 : 1,878,358.45 = 740,935 : x
  2. Step 2: Convert to fraction form
    1,361,112/1,878,358.45 = 740,935/x
  3. Step 3: Cross multiply
    1,361,112x = 1,878,358.45 × 740,935
  4. Step 4: Simplify right side
    1,361,112x = 1,391,741,518,150.75
  5. Step 5: Solve for x
    x = 1,391,741,518,150.75/1,361,112
  6. Step 6: Final answer
    x = 1,022,503.30

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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.