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Finding the Fourth Proportional to 554,528.54, 765,445.48 and 328,173.50

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Solution

The fourth proportional to 554,528.54, 765,445.48 and 328,173.50 is: 452,995.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,528.54 : 765,445.48 = 328,173.50 : x
  2. Step 2: Convert to fraction form
    554,528.54/765,445.48 = 328,173.50/x
  3. Step 3: Cross multiply
    554,528.54x = 765,445.48 × 328,173.50
  4. Step 4: Simplify right side
    554,528.54x = 251,198,922,230.78
  5. Step 5: Solve for x
    x = 251,198,922,230.78/554,528.54
  6. Step 6: Final answer
    x = 452,995.48

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1.5x scale

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.