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Finding the Fourth Proportional to 19,490.99, 26,897.55 and 10,538.49

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Solution

The fourth proportional to 19,490.99, 26,897.55 and 10,538.49 is: 14,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,490.99 : 26,897.55 = 10,538.49 : x
  2. Step 2: Convert to fraction form
    19,490.99/26,897.55 = 10,538.49/x
  3. Step 3: Cross multiply
    19,490.99x = 26,897.55 × 10,538.49
  4. Step 4: Simplify right side
    19,490.99x = 283,459,561.70
  5. Step 5: Solve for x
    x = 283,459,561.70/19,490.99
  6. Step 6: Final answer
    x = 14,543.11

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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.