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Finding the Fourth Proportional to 469,885.31, 648,442.08 and 255,025.32

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Solution

The fourth proportional to 469,885.31, 648,442.08 and 255,025.32 is: 351,935.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,885.31 : 648,442.08 = 255,025.32 : x
  2. Step 2: Convert to fraction form
    469,885.31/648,442.08 = 255,025.32/x
  3. Step 3: Cross multiply
    469,885.31x = 648,442.08 × 255,025.32
  4. Step 4: Simplify right side
    469,885.31x = 165,369,148,953.47
  5. Step 5: Solve for x
    x = 165,369,148,953.47/469,885.31
  6. Step 6: Final answer
    x = 351,935.13

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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.