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Finding the Fourth Proportional to 18,851.91, 26,018.84 and 10,898.76

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Solution

The fourth proportional to 18,851.91, 26,018.84 and 10,898.76 is: 15,042.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.91 : 26,018.84 = 10,898.76 : x
  2. Step 2: Convert to fraction form
    18,851.91/26,018.84 = 10,898.76/x
  3. Step 3: Cross multiply
    18,851.91x = 26,018.84 × 10,898.76
  4. Step 4: Simplify right side
    18,851.91x = 283,573,038.14
  5. Step 5: Solve for x
    x = 283,573,038.14/18,851.91
  6. Step 6: Final answer
    x = 15,042.14

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Half scale
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Double scale
Find fourth proportional to 18,852.91, 26,020.22 and 10,899.76
Similar ratio
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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.