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Finding the Fourth Proportional to 70,005.66, 105,008.58 and 17,415.18

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Solution

The fourth proportional to 70,005.66, 105,008.58 and 17,415.18 is: 26,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,005.66 : 105,008.58 = 17,415.18 : x
  2. Step 2: Convert to fraction form
    70,005.66/105,008.58 = 17,415.18/x
  3. Step 3: Cross multiply
    70,005.66x = 105,008.58 × 17,415.18
  4. Step 4: Simplify right side
    70,005.66x = 1,828,743,322.24
  5. Step 5: Solve for x
    x = 1,828,743,322.24/70,005.66
  6. Step 6: Final answer
    x = 26,122.79

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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.