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Finding the Fourth Proportional to 1,897.98, 2,828.88 and 1,861.53

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Solution

The fourth proportional to 1,897.98, 2,828.88 and 1,861.53 is: 2,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.98 : 2,828.88 = 1,861.53 : x
  2. Step 2: Convert to fraction form
    1,897.98/2,828.88 = 1,861.53/x
  3. Step 3: Cross multiply
    1,897.98x = 2,828.88 × 1,861.53
  4. Step 4: Simplify right side
    1,897.98x = 5,266,044.99
  5. Step 5: Solve for x
    x = 5,266,044.99/1,897.98
  6. Step 6: Final answer
    x = 2,774.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.