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Finding the Fourth Proportional to 907,544.80, 1,361,317.20 and 765,827.20

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Solution

The fourth proportional to 907,544.80, 1,361,317.20 and 765,827.20 is: 1,148,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,544.80 : 1,361,317.20 = 765,827.20 : x
  2. Step 2: Convert to fraction form
    907,544.80/1,361,317.20 = 765,827.20/x
  3. Step 3: Cross multiply
    907,544.80x = 1,361,317.20 × 765,827.20
  4. Step 4: Simplify right side
    907,544.80x = 1,042,533,739,587.84
  5. Step 5: Solve for x
    x = 1,042,533,739,587.84/907,544.80
  6. Step 6: Final answer
    x = 1,148,740.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.