Home / 413,968.05-620,952.13-129,680.76

Finding the Fourth Proportional to 413,968.05, 620,952.13 and 129,680.76

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Solution

The fourth proportional to 413,968.05, 620,952.13 and 129,680.76 is: 194,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,968.05 : 620,952.13 = 129,680.76 : x
  2. Step 2: Convert to fraction form
    413,968.05/620,952.13 = 129,680.76/x
  3. Step 3: Cross multiply
    413,968.05x = 620,952.13 × 129,680.76
  4. Step 4: Simplify right side
    413,968.05x = 80,525,544,142.02
  5. Step 5: Solve for x
    x = 80,525,544,142.02/413,968.05
  6. Step 6: Final answer
    x = 194,521.16

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1.5x scale

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.