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Finding the Fourth Proportional to 385,739.52, 578,609.34 and 186,022.68

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Solution

The fourth proportional to 385,739.52, 578,609.34 and 186,022.68 is: 279,034.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,739.52 : 578,609.34 = 186,022.68 : x
  2. Step 2: Convert to fraction form
    385,739.52/578,609.34 = 186,022.68/x
  3. Step 3: Cross multiply
    385,739.52x = 578,609.34 × 186,022.68
  4. Step 4: Simplify right side
    385,739.52x = 107,634,460,099.83
  5. Step 5: Solve for x
    x = 107,634,460,099.83/385,739.52
  6. Step 6: Final answer
    x = 279,034.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.