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Finding the Fourth Proportional to 30,476.52, 42,055.20 and 17,046.72

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Solution

The fourth proportional to 30,476.52, 42,055.20 and 17,046.72 is: 23,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,476.52 : 42,055.20 = 17,046.72 : x
  2. Step 2: Convert to fraction form
    30,476.52/42,055.20 = 17,046.72/x
  3. Step 3: Cross multiply
    30,476.52x = 42,055.20 × 17,046.72
  4. Step 4: Simplify right side
    30,476.52x = 716,903,218.94
  5. Step 5: Solve for x
    x = 716,903,218.94/30,476.52
  6. Step 6: Final answer
    x = 23,523.13

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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.