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Finding the Fourth Proportional to 139,238.98, 208,577.54 and 64,254.94

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Solution

The fourth proportional to 139,238.98, 208,577.54 and 64,254.94 is: 96,252.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,238.98 : 208,577.54 = 64,254.94 : x
  2. Step 2: Convert to fraction form
    139,238.98/208,577.54 = 64,254.94/x
  3. Step 3: Cross multiply
    139,238.98x = 208,577.54 × 64,254.94
  4. Step 4: Simplify right side
    139,238.98x = 13,402,137,318.05
  5. Step 5: Solve for x
    x = 13,402,137,318.05/139,238.98
  6. Step 6: Final answer
    x = 96,252.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.