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Finding the Fourth Proportional to 440,661.12, 608,116.20 and 239,457.12

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Solution

The fourth proportional to 440,661.12, 608,116.20 and 239,457.12 is: 330,452.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,661.12 : 608,116.20 = 239,457.12 : x
  2. Step 2: Convert to fraction form
    440,661.12/608,116.20 = 239,457.12/x
  3. Step 3: Cross multiply
    440,661.12x = 608,116.20 × 239,457.12
  4. Step 4: Simplify right side
    440,661.12x = 145,617,753,877.34
  5. Step 5: Solve for x
    x = 145,617,753,877.34/440,661.12
  6. Step 6: Final answer
    x = 330,452.92

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Half scale
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Double scale
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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.