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Finding the Fourth Proportional to 351,123.14, 484,549.93 and 189,978.19

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Solution

The fourth proportional to 351,123.14, 484,549.93 and 189,978.19 is: 262,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,123.14 : 484,549.93 = 189,978.19 : x
  2. Step 2: Convert to fraction form
    351,123.14/484,549.93 = 189,978.19/x
  3. Step 3: Cross multiply
    351,123.14x = 484,549.93 × 189,978.19
  4. Step 4: Simplify right side
    351,123.14x = 92,053,918,666.03
  5. Step 5: Solve for x
    x = 92,053,918,666.03/351,123.14
  6. Step 6: Final answer
    x = 262,169.90

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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.