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Finding the Fourth Proportional to 64,396.49, 88,911.15 and 40,234.24

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Solution

The fourth proportional to 64,396.49, 88,911.15 and 40,234.24 is: 55,550.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,396.49 : 88,911.15 = 40,234.24 : x
  2. Step 2: Convert to fraction form
    64,396.49/88,911.15 = 40,234.24/x
  3. Step 3: Cross multiply
    64,396.49x = 88,911.15 × 40,234.24
  4. Step 4: Simplify right side
    64,396.49x = 3,577,272,547.78
  5. Step 5: Solve for x
    x = 3,577,272,547.78/64,396.49
  6. Step 6: Final answer
    x = 55,550.74

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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.