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Finding the Fourth Proportional to 358,412.79, 494,530.23 and 207,422.31

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Solution

The fourth proportional to 358,412.79, 494,530.23 and 207,422.31 is: 286,196.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,412.79 : 494,530.23 = 207,422.31 : x
  2. Step 2: Convert to fraction form
    358,412.79/494,530.23 = 207,422.31/x
  3. Step 3: Cross multiply
    358,412.79x = 494,530.23 × 207,422.31
  4. Step 4: Simplify right side
    358,412.79x = 102,576,602,671.43
  5. Step 5: Solve for x
    x = 102,576,602,671.43/358,412.79
  6. Step 6: Final answer
    x = 286,196.83

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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.