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Finding the Fourth Proportional to 439,641.46, 606,709.29 and 258,357.34

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Solution

The fourth proportional to 439,641.46, 606,709.29 and 258,357.34 is: 356,535.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,641.46 : 606,709.29 = 258,357.34 : x
  2. Step 2: Convert to fraction form
    439,641.46/606,709.29 = 258,357.34/x
  3. Step 3: Cross multiply
    439,641.46x = 606,709.29 × 258,357.34
  4. Step 4: Simplify right side
    439,641.46x = 156,747,798,317.69
  5. Step 5: Solve for x
    x = 156,747,798,317.69/439,641.46
  6. Step 6: Final answer
    x = 356,535.52

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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.