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Finding the Fourth Proportional to 289,189.95, 399,025.42 and 181,697.71

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Solution

The fourth proportional to 289,189.95, 399,025.42 and 181,697.71 is: 250,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,189.95 : 399,025.42 = 181,697.71 : x
  2. Step 2: Convert to fraction form
    289,189.95/399,025.42 = 181,697.71/x
  3. Step 3: Cross multiply
    289,189.95x = 399,025.42 × 181,697.71
  4. Step 4: Simplify right side
    289,189.95x = 72,502,005,045.79
  5. Step 5: Solve for x
    x = 72,502,005,045.79/289,189.95
  6. Step 6: Final answer
    x = 250,707.21

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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.