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Finding the Fourth Proportional to 319,388.32, 440,772.72 and 223,860.16

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Solution

The fourth proportional to 319,388.32, 440,772.72 and 223,860.16 is: 308,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,388.32 : 440,772.72 = 223,860.16 : x
  2. Step 2: Convert to fraction form
    319,388.32/440,772.72 = 223,860.16/x
  3. Step 3: Cross multiply
    319,388.32x = 440,772.72 × 223,860.16
  4. Step 4: Simplify right side
    319,388.32x = 98,671,451,622.84
  5. Step 5: Solve for x
    x = 98,671,451,622.84/319,388.32
  6. Step 6: Final answer
    x = 308,938.82

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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.