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Finding the Fourth Proportional to 516,993.06, 713,514.51 and 290,638.56

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Solution

The fourth proportional to 516,993.06, 713,514.51 and 290,638.56 is: 401,117.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,993.06 : 713,514.51 = 290,638.56 : x
  2. Step 2: Convert to fraction form
    516,993.06/713,514.51 = 290,638.56/x
  3. Step 3: Cross multiply
    516,993.06x = 713,514.51 × 290,638.56
  4. Step 4: Simplify right side
    516,993.06x = 207,374,829,725.51
  5. Step 5: Solve for x
    x = 207,374,829,725.51/516,993.06
  6. Step 6: Final answer
    x = 401,117.24

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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.