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Finding the Fourth Proportional to 573,355.77, 791,239.74 and 315,243.90

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Solution

The fourth proportional to 573,355.77, 791,239.74 and 315,243.90 is: 435,041.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,355.77 : 791,239.74 = 315,243.90 : x
  2. Step 2: Convert to fraction form
    573,355.77/791,239.74 = 315,243.90/x
  3. Step 3: Cross multiply
    573,355.77x = 791,239.74 × 315,243.90
  4. Step 4: Simplify right side
    573,355.77x = 249,433,502,063.67
  5. Step 5: Solve for x
    x = 249,433,502,063.67/573,355.77
  6. Step 6: Final answer
    x = 435,041.41

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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.