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Finding the Fourth Proportional to 590,139.93, 814,687.20 and 386,502.90

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Solution

The fourth proportional to 590,139.93, 814,687.20 and 386,502.90 is: 533,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,139.93 : 814,687.20 = 386,502.90 : x
  2. Step 2: Convert to fraction form
    590,139.93/814,687.20 = 386,502.90/x
  3. Step 3: Cross multiply
    590,139.93x = 814,687.20 × 386,502.90
  4. Step 4: Simplify right side
    590,139.93x = 314,878,965,392.88
  5. Step 5: Solve for x
    x = 314,878,965,392.88/590,139.93
  6. Step 6: Final answer
    x = 533,566.62

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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.