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Finding the Fourth Proportional to 578,144.98, 866,719.12 and 223,407.91

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Solution

The fourth proportional to 578,144.98, 866,719.12 and 223,407.91 is: 334,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,144.98 : 866,719.12 = 223,407.91 : x
  2. Step 2: Convert to fraction form
    578,144.98/866,719.12 = 223,407.91/x
  3. Step 3: Cross multiply
    578,144.98x = 866,719.12 × 223,407.91
  4. Step 4: Simplify right side
    578,144.98x = 193,631,907,156.24
  5. Step 5: Solve for x
    x = 193,631,907,156.24/578,144.98
  6. Step 6: Final answer
    x = 334,919.29

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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.