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Finding the Fourth Proportional to 573,420.12, 791,329.04 and 315,308.33

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Solution

The fourth proportional to 573,420.12, 791,329.04 and 315,308.33 is: 435,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,420.12 : 791,329.04 = 315,308.33 : x
  2. Step 2: Convert to fraction form
    573,420.12/791,329.04 = 315,308.33/x
  3. Step 3: Cross multiply
    573,420.12x = 791,329.04 × 315,308.33
  4. Step 4: Simplify right side
    573,420.12x = 249,512,641,811.64
  5. Step 5: Solve for x
    x = 249,512,641,811.64/573,420.12
  6. Step 6: Final answer
    x = 435,130.60

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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.