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Finding the Fourth Proportional to 449,698.90, 620,592.63 and 245,758.45

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Solution

The fourth proportional to 449,698.90, 620,592.63 and 245,758.45 is: 339,151.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,698.90 : 620,592.63 = 245,758.45 : x
  2. Step 2: Convert to fraction form
    449,698.90/620,592.63 = 245,758.45/x
  3. Step 3: Cross multiply
    449,698.90x = 620,592.63 × 245,758.45
  4. Step 4: Simplify right side
    449,698.90x = 152,515,882,830.22
  5. Step 5: Solve for x
    x = 152,515,882,830.22/449,698.90
  6. Step 6: Final answer
    x = 339,151.11

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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.