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Finding the Fourth Proportional to 573,785.47, 791,812.91 and 315,647.33

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Solution

The fourth proportional to 573,785.47, 791,812.91 and 315,647.33 is: 435,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,785.47 : 791,812.91 = 315,647.33 : x
  2. Step 2: Convert to fraction form
    573,785.47/791,812.91 = 315,647.33/x
  3. Step 3: Cross multiply
    573,785.47x = 791,812.91 × 315,647.33
  4. Step 4: Simplify right side
    573,785.47x = 249,933,629,322.79
  5. Step 5: Solve for x
    x = 249,933,629,322.79/573,785.47
  6. Step 6: Final answer
    x = 435,587.24

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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.