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Finding the Fourth Proportional to 552,074.54, 761,810.40 and 322,685.64

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Solution

The fourth proportional to 552,074.54, 761,810.40 and 322,685.64 is: 445,275.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,074.54 : 761,810.40 = 322,685.64 : x
  2. Step 2: Convert to fraction form
    552,074.54/761,810.40 = 322,685.64/x
  3. Step 3: Cross multiply
    552,074.54x = 761,810.40 × 322,685.64
  4. Step 4: Simplify right side
    552,074.54x = 245,825,276,482.66
  5. Step 5: Solve for x
    x = 245,825,276,482.66/552,074.54
  6. Step 6: Final answer
    x = 445,275.52

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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.