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Finding the Fourth Proportional to 70,625.20, 105,840.60 and 46,865.20

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Solution

The fourth proportional to 70,625.20, 105,840.60 and 46,865.20 is: 70,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,625.20 : 105,840.60 = 46,865.20 : x
  2. Step 2: Convert to fraction form
    70,625.20/105,840.60 = 46,865.20/x
  3. Step 3: Cross multiply
    70,625.20x = 105,840.60 × 46,865.20
  4. Step 4: Simplify right side
    70,625.20x = 4,960,240,887.12
  5. Step 5: Solve for x
    x = 4,960,240,887.12/70,625.20
  6. Step 6: Final answer
    x = 70,233.30

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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.