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Finding the Fourth Proportional to 223,567.29, 308,566.67 and 128,137.95

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Solution

The fourth proportional to 223,567.29, 308,566.67 and 128,137.95 is: 176,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,567.29 : 308,566.67 = 128,137.95 : x
  2. Step 2: Convert to fraction form
    223,567.29/308,566.67 = 128,137.95/x
  3. Step 3: Cross multiply
    223,567.29x = 308,566.67 × 128,137.95
  4. Step 4: Simplify right side
    223,567.29x = 39,539,099,891.44
  5. Step 5: Solve for x
    x = 39,539,099,891.44/223,567.29
  6. Step 6: Final answer
    x = 176,855.48

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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.