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Finding the Fourth Proportional to 57,689.84, 79,619.28 and 33,485.63

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Solution

The fourth proportional to 57,689.84, 79,619.28 and 33,485.63 is: 46,214.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,689.84 : 79,619.28 = 33,485.63 : x
  2. Step 2: Convert to fraction form
    57,689.84/79,619.28 = 33,485.63/x
  3. Step 3: Cross multiply
    57,689.84x = 79,619.28 × 33,485.63
  4. Step 4: Simplify right side
    57,689.84x = 2,666,101,750.95
  5. Step 5: Solve for x
    x = 2,666,101,750.95/57,689.84
  6. Step 6: Final answer
    x = 46,214.41

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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.