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Finding the Fourth Proportional to 104,802.61, 144,630.63 and 57,056.77

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Solution

The fourth proportional to 104,802.61, 144,630.63 and 57,056.77 is: 78,739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,802.61 : 144,630.63 = 57,056.77 : x
  2. Step 2: Convert to fraction form
    104,802.61/144,630.63 = 57,056.77/x
  3. Step 3: Cross multiply
    104,802.61x = 144,630.63 × 57,056.77
  4. Step 4: Simplify right side
    104,802.61x = 8,252,156,590.87
  5. Step 5: Solve for x
    x = 8,252,156,590.87/104,802.61
  6. Step 6: Final answer
    x = 78,739.99

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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.