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Finding the Fourth Proportional to 129,655.80, 194,051.70 and 94,015.80

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Solution

The fourth proportional to 129,655.80, 194,051.70 and 94,015.80 is: 140,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,655.80 : 194,051.70 = 94,015.80 : x
  2. Step 2: Convert to fraction form
    129,655.80/194,051.70 = 94,015.80/x
  3. Step 3: Cross multiply
    129,655.80x = 194,051.70 × 94,015.80
  4. Step 4: Simplify right side
    129,655.80x = 18,243,925,816.86
  5. Step 5: Solve for x
    x = 18,243,925,816.86/129,655.80
  6. Step 6: Final answer
    x = 140,710.45

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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.