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Finding the Fourth Proportional to 252,602.50, 348,591.45 and 139,425.25

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Solution

The fourth proportional to 252,602.50, 348,591.45 and 139,425.25 is: 192,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,602.50 : 348,591.45 = 139,425.25 : x
  2. Step 2: Convert to fraction form
    252,602.50/348,591.45 = 139,425.25/x
  3. Step 3: Cross multiply
    252,602.50x = 348,591.45 × 139,425.25
  4. Step 4: Simplify right side
    252,602.50x = 48,602,450,064.11
  5. Step 5: Solve for x
    x = 48,602,450,064.11/252,602.50
  6. Step 6: Final answer
    x = 192,406.85

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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.