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Finding the Fourth Proportional to 77,282.64, 106,599.24 and 60,486.48

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Solution

The fourth proportional to 77,282.64, 106,599.24 and 60,486.48 is: 83,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,282.64 : 106,599.24 = 60,486.48 : x
  2. Step 2: Convert to fraction form
    77,282.64/106,599.24 = 60,486.48/x
  3. Step 3: Cross multiply
    77,282.64x = 106,599.24 × 60,486.48
  4. Step 4: Simplify right side
    77,282.64x = 6,447,812,798.28
  5. Step 5: Solve for x
    x = 6,447,812,798.28/77,282.64
  6. Step 6: Final answer
    x = 83,431.58

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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.