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Finding the Fourth Proportional to 419,021.54, 578,262.84 and 237,741.10

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Solution

The fourth proportional to 419,021.54, 578,262.84 and 237,741.10 is: 328,090.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,021.54 : 578,262.84 = 237,741.10 : x
  2. Step 2: Convert to fraction form
    419,021.54/578,262.84 = 237,741.10/x
  3. Step 3: Cross multiply
    419,021.54x = 578,262.84 × 237,741.10
  4. Step 4: Simplify right side
    419,021.54x = 137,476,843,670.72
  5. Step 5: Solve for x
    x = 137,476,843,670.72/419,021.54
  6. Step 6: Final answer
    x = 328,090.16

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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.