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Finding the Fourth Proportional to 51,059.55, 70,460.95 and 28,398.48

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Solution

The fourth proportional to 51,059.55, 70,460.95 and 28,398.48 is: 39,189.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,059.55 : 70,460.95 = 28,398.48 : x
  2. Step 2: Convert to fraction form
    51,059.55/70,460.95 = 28,398.48/x
  3. Step 3: Cross multiply
    51,059.55x = 70,460.95 × 28,398.48
  4. Step 4: Simplify right side
    51,059.55x = 2,000,983,879.36
  5. Step 5: Solve for x
    x = 2,000,983,879.36/51,059.55
  6. Step 6: Final answer
    x = 39,189.22

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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.