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Finding the Fourth Proportional to 77,208.79, 106,547.12 and 43,674.79

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Solution

The fourth proportional to 77,208.79, 106,547.12 and 43,674.79 is: 60,270.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,208.79 : 106,547.12 = 43,674.79 : x
  2. Step 2: Convert to fraction form
    77,208.79/106,547.12 = 43,674.79/x
  3. Step 3: Cross multiply
    77,208.79x = 106,547.12 × 43,674.79
  4. Step 4: Simplify right side
    77,208.79x = 4,653,422,872.73
  5. Step 5: Solve for x
    x = 4,653,422,872.73/77,208.79
  6. Step 6: Final answer
    x = 60,270.64

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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.