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Finding the Fourth Proportional to 393,330.84, 542,795.40 and 223,597.68

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Solution

The fourth proportional to 393,330.84, 542,795.40 and 223,597.68 is: 308,564.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,330.84 : 542,795.40 = 223,597.68 : x
  2. Step 2: Convert to fraction form
    393,330.84/542,795.40 = 223,597.68/x
  3. Step 3: Cross multiply
    393,330.84x = 542,795.40 × 223,597.68
  4. Step 4: Simplify right side
    393,330.84x = 121,367,792,154.67
  5. Step 5: Solve for x
    x = 121,367,792,154.67/393,330.84
  6. Step 6: Final answer
    x = 308,564.14

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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.