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Finding the Fourth Proportional to 30,476.98, 42,061.72 and 17,051.63

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Solution

The fourth proportional to 30,476.98, 42,061.72 and 17,051.63 is: 23,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,476.98 : 42,061.72 = 17,051.63 : x
  2. Step 2: Convert to fraction form
    30,476.98/42,061.72 = 17,051.63/x
  3. Step 3: Cross multiply
    30,476.98x = 42,061.72 × 17,051.63
  4. Step 4: Simplify right side
    30,476.98x = 717,220,906.50
  5. Step 5: Solve for x
    x = 717,220,906.50/30,476.98
  6. Step 6: Final answer
    x = 23,533.20

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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.