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Finding the Fourth Proportional to 18,798.81, 28,330.35 and 16,926.99

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Solution

The fourth proportional to 18,798.81, 28,330.35 and 16,926.99 is: 25,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.81 : 28,330.35 = 16,926.99 : x
  2. Step 2: Convert to fraction form
    18,798.81/28,330.35 = 16,926.99/x
  3. Step 3: Cross multiply
    18,798.81x = 28,330.35 × 16,926.99
  4. Step 4: Simplify right side
    18,798.81x = 479,547,551.15
  5. Step 5: Solve for x
    x = 479,547,551.15/18,798.81
  6. Step 6: Final answer
    x = 25,509.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.