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Finding the Fourth Proportional to 393,598.78, 543,159.51 and 223,829.02

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Solution

The fourth proportional to 393,598.78, 543,159.51 and 223,829.02 is: 308,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,598.78 : 543,159.51 = 223,829.02 : x
  2. Step 2: Convert to fraction form
    393,598.78/543,159.51 = 223,829.02/x
  3. Step 3: Cross multiply
    393,598.78x = 543,159.51 × 223,829.02
  4. Step 4: Simplify right side
    393,598.78x = 121,574,860,826.98
  5. Step 5: Solve for x
    x = 121,574,860,826.98/393,598.78
  6. Step 6: Final answer
    x = 308,880.18

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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.