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Finding the Fourth Proportional to 356,661.28, 534,995.16 and 154,219.60

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Solution

The fourth proportional to 356,661.28, 534,995.16 and 154,219.60 is: 231,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,661.28 : 534,995.16 = 154,219.60 : x
  2. Step 2: Convert to fraction form
    356,661.28/534,995.16 = 154,219.60/x
  3. Step 3: Cross multiply
    356,661.28x = 534,995.16 × 154,219.60
  4. Step 4: Simplify right side
    356,661.28x = 82,506,739,577.14
  5. Step 5: Solve for x
    x = 82,506,739,577.14/356,661.28
  6. Step 6: Final answer
    x = 231,330.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.