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Finding the Fourth Proportional to 319,226.48, 440,617.48 and 188,518.80

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Solution

The fourth proportional to 319,226.48, 440,617.48 and 188,518.80 is: 260,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,226.48 : 440,617.48 = 188,518.80 : x
  2. Step 2: Convert to fraction form
    319,226.48/440,617.48 = 188,518.80/x
  3. Step 3: Cross multiply
    319,226.48x = 440,617.48 × 188,518.80
  4. Step 4: Simplify right side
    319,226.48x = 83,064,678,588.62
  5. Step 5: Solve for x
    x = 83,064,678,588.62/319,226.48
  6. Step 6: Final answer
    x = 260,206.10

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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.