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Finding the Fourth Proportional to 279,177.60, 385,333.53 and 158,389.59

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Solution

The fourth proportional to 279,177.60, 385,333.53 and 158,389.59 is: 218,616.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,177.60 : 385,333.53 = 158,389.59 : x
  2. Step 2: Convert to fraction form
    279,177.60/385,333.53 = 158,389.59/x
  3. Step 3: Cross multiply
    279,177.60x = 385,333.53 × 158,389.59
  4. Step 4: Simplify right side
    279,177.60x = 61,032,820,680.99
  5. Step 5: Solve for x
    x = 61,032,820,680.99/279,177.60
  6. Step 6: Final answer
    x = 218,616.46

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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.