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Finding the Fourth Proportional to 407,124.17, 561,840.36 and 225,830.21

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Solution

The fourth proportional to 407,124.17, 561,840.36 and 225,830.21 is: 311,650.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,124.17 : 561,840.36 = 225,830.21 : x
  2. Step 2: Convert to fraction form
    407,124.17/561,840.36 = 225,830.21/x
  3. Step 3: Cross multiply
    407,124.17x = 561,840.36 × 225,830.21
  4. Step 4: Simplify right side
    407,124.17x = 126,880,526,485.28
  5. Step 5: Solve for x
    x = 126,880,526,485.28/407,124.17
  6. Step 6: Final answer
    x = 311,650.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.