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Finding the Fourth Proportional to 7,236.98, 9,985.74 and 4,253.41

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Solution

The fourth proportional to 7,236.98, 9,985.74 and 4,253.41 is: 5,868.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.98 : 9,985.74 = 4,253.41 : x
  2. Step 2: Convert to fraction form
    7,236.98/9,985.74 = 4,253.41/x
  3. Step 3: Cross multiply
    7,236.98x = 9,985.74 × 4,253.41
  4. Step 4: Simplify right side
    7,236.98x = 42,473,461.63
  5. Step 5: Solve for x
    x = 42,473,461.63/7,236.98
  6. Step 6: Final answer
    x = 5,868.95

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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.