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Finding the Fourth Proportional to 419,021.61, 578,262.86 and 237,741.18

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Solution

The fourth proportional to 419,021.61, 578,262.86 and 237,741.18 is: 328,090.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,021.61 : 578,262.86 = 237,741.18 : x
  2. Step 2: Convert to fraction form
    419,021.61/578,262.86 = 237,741.18/x
  3. Step 3: Cross multiply
    419,021.61x = 578,262.86 × 237,741.18
  4. Step 4: Simplify right side
    419,021.61x = 137,476,894,686.58
  5. Step 5: Solve for x
    x = 137,476,894,686.58/419,021.61
  6. Step 6: Final answer
    x = 328,090.23

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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.