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Finding the Fourth Proportional to 319,530.52, 440,637.12 and 247,884.40

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Solution

The fourth proportional to 319,530.52, 440,637.12 and 247,884.40 is: 341,836.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,530.52 : 440,637.12 = 247,884.40 : x
  2. Step 2: Convert to fraction form
    319,530.52/440,637.12 = 247,884.40/x
  3. Step 3: Cross multiply
    319,530.52x = 440,637.12 × 247,884.40
  4. Step 4: Simplify right side
    319,530.52x = 109,227,068,108.93
  5. Step 5: Solve for x
    x = 109,227,068,108.93/319,530.52
  6. Step 6: Final answer
    x = 341,836.10

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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.