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Finding the Fourth Proportional to 28,573.48, 42,859.74 and 7,796.98

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Solution

The fourth proportional to 28,573.48, 42,859.74 and 7,796.98 is: 11,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,573.48 : 42,859.74 = 7,796.98 : x
  2. Step 2: Convert to fraction form
    28,573.48/42,859.74 = 7,796.98/x
  3. Step 3: Cross multiply
    28,573.48x = 42,859.74 × 7,796.98
  4. Step 4: Simplify right side
    28,573.48x = 334,176,535.59
  5. Step 5: Solve for x
    x = 334,176,535.59/28,573.48
  6. Step 6: Final answer
    x = 11,695.34

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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.