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Finding the Fourth Proportional to 386,011.84, 579,095.10 and 133,301.56

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Solution

The fourth proportional to 386,011.84, 579,095.10 and 133,301.56 is: 199,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,011.84 : 579,095.10 = 133,301.56 : x
  2. Step 2: Convert to fraction form
    386,011.84/579,095.10 = 133,301.56/x
  3. Step 3: Cross multiply
    386,011.84x = 579,095.10 × 133,301.56
  4. Step 4: Simplify right side
    386,011.84x = 77,194,280,218.36
  5. Step 5: Solve for x
    x = 77,194,280,218.36/386,011.84
  6. Step 6: Final answer
    x = 199,979.05

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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.