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Finding the Fourth Proportional to 104,432.49, 144,119.86 and 56,688.86

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Solution

The fourth proportional to 104,432.49, 144,119.86 and 56,688.86 is: 78,232.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,432.49 : 144,119.86 = 56,688.86 : x
  2. Step 2: Convert to fraction form
    104,432.49/144,119.86 = 56,688.86/x
  3. Step 3: Cross multiply
    104,432.49x = 144,119.86 × 56,688.86
  4. Step 4: Simplify right side
    104,432.49x = 8,169,990,785.34
  5. Step 5: Solve for x
    x = 8,169,990,785.34/104,432.49
  6. Step 6: Final answer
    x = 78,232.27

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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.