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Finding the Fourth Proportional to 529,169.32, 793,756.14 and 129,812.68

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Solution

The fourth proportional to 529,169.32, 793,756.14 and 129,812.68 is: 194,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,169.32 : 793,756.14 = 129,812.68 : x
  2. Step 2: Convert to fraction form
    529,169.32/793,756.14 = 129,812.68/x
  3. Step 3: Cross multiply
    529,169.32x = 793,756.14 × 129,812.68
  4. Step 4: Simplify right side
    529,169.32x = 103,039,611,799.86
  5. Step 5: Solve for x
    x = 103,039,611,799.86/529,169.32
  6. Step 6: Final answer
    x = 194,719.55

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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.