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Finding the Fourth Proportional to 79,232, 109,340.16 and 47,402.24

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Solution

The fourth proportional to 79,232, 109,340.16 and 47,402.24 is: 65,415.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,232 : 109,340.16 = 47,402.24 : x
  2. Step 2: Convert to fraction form
    79,232/109,340.16 = 47,402.24/x
  3. Step 3: Cross multiply
    79,232x = 109,340.16 × 47,402.24
  4. Step 4: Simplify right side
    79,232x = 5,182,968,505.96
  5. Step 5: Solve for x
    x = 5,182,968,505.96/79,232
  6. Step 6: Final answer
    x = 65,415.09

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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.