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Finding the Fourth Proportional to 223,828.24, 308,909.64 and 128,334.64

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Solution

The fourth proportional to 223,828.24, 308,909.64 and 128,334.64 is: 177,117.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,828.24 : 308,909.64 = 128,334.64 : x
  2. Step 2: Convert to fraction form
    223,828.24/308,909.64 = 128,334.64/x
  3. Step 3: Cross multiply
    223,828.24x = 308,909.64 × 128,334.64
  4. Step 4: Simplify right side
    223,828.24x = 39,643,807,441.93
  5. Step 5: Solve for x
    x = 39,643,807,441.93/223,828.24
  6. Step 6: Final answer
    x = 177,117.09

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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.