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Finding the Fourth Proportional to 29,030.31, 40,074.08 and 19,611.63

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Solution

The fourth proportional to 29,030.31, 40,074.08 and 19,611.63 is: 27,072.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,030.31 : 40,074.08 = 19,611.63 : x
  2. Step 2: Convert to fraction form
    29,030.31/40,074.08 = 19,611.63/x
  3. Step 3: Cross multiply
    29,030.31x = 40,074.08 × 19,611.63
  4. Step 4: Simplify right side
    29,030.31x = 785,917,931.49
  5. Step 5: Solve for x
    x = 785,917,931.49/29,030.31
  6. Step 6: Final answer
    x = 27,072.32

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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.