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Finding the Fourth Proportional to 29,986.61, 45,009.07 and 14,415.17

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Solution

The fourth proportional to 29,986.61, 45,009.07 and 14,415.17 is: 21,636.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,986.61 : 45,009.07 = 14,415.17 : x
  2. Step 2: Convert to fraction form
    29,986.61/45,009.07 = 14,415.17/x
  3. Step 3: Cross multiply
    29,986.61x = 45,009.07 × 14,415.17
  4. Step 4: Simplify right side
    29,986.61x = 648,813,134.51
  5. Step 5: Solve for x
    x = 648,813,134.51/29,986.61
  6. Step 6: Final answer
    x = 21,636.77

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1.5x scale

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.