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Finding the Fourth Proportional to 318,970.62, 440,088.12 and 189,801.14

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Solution

The fourth proportional to 318,970.62, 440,088.12 and 189,801.14 is: 261,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,970.62 : 440,088.12 = 189,801.14 : x
  2. Step 2: Convert to fraction form
    318,970.62/440,088.12 = 189,801.14/x
  3. Step 3: Cross multiply
    318,970.62x = 440,088.12 × 189,801.14
  4. Step 4: Simplify right side
    318,970.62x = 83,529,224,676.02
  5. Step 5: Solve for x
    x = 83,529,224,676.02/318,970.62
  6. Step 6: Final answer
    x = 261,871.22

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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.