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Finding the Fourth Proportional to 109,051.20, 164,014.20 and 97,678.80

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Solution

The fourth proportional to 109,051.20, 164,014.20 and 97,678.80 is: 146,909.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,051.20 : 164,014.20 = 97,678.80 : x
  2. Step 2: Convert to fraction form
    109,051.20/164,014.20 = 97,678.80/x
  3. Step 3: Cross multiply
    109,051.20x = 164,014.20 × 97,678.80
  4. Step 4: Simplify right side
    109,051.20x = 16,020,710,238.96
  5. Step 5: Solve for x
    x = 16,020,710,238.96/109,051.20
  6. Step 6: Final answer
    x = 146,909.99

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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.