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Finding the Fourth Proportional to 554,798.10, 765,608.76 and 313,074.48

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Solution

The fourth proportional to 554,798.10, 765,608.76 and 313,074.48 is: 432,035.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,798.10 : 765,608.76 = 313,074.48 : x
  2. Step 2: Convert to fraction form
    554,798.10/765,608.76 = 313,074.48/x
  3. Step 3: Cross multiply
    554,798.10x = 765,608.76 × 313,074.48
  4. Step 4: Simplify right side
    554,798.10x = 239,692,564,420.45
  5. Step 5: Solve for x
    x = 239,692,564,420.45/554,798.10
  6. Step 6: Final answer
    x = 432,035.66

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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.