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Finding the Fourth Proportional to 619,860.37, 855,341.58 and 347,958.22

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Solution

The fourth proportional to 619,860.37, 855,341.58 and 347,958.22 is: 480,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,860.37 : 855,341.58 = 347,958.22 : x
  2. Step 2: Convert to fraction form
    619,860.37/855,341.58 = 347,958.22/x
  3. Step 3: Cross multiply
    619,860.37x = 855,341.58 × 347,958.22
  4. Step 4: Simplify right side
    619,860.37x = 297,623,133,668.79
  5. Step 5: Solve for x
    x = 297,623,133,668.79/619,860.37
  6. Step 6: Final answer
    x = 480,145.45

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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.