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Finding the Fourth Proportional to 515,028.19, 710,740.44 and 285,601.63

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Solution

The fourth proportional to 515,028.19, 710,740.44 and 285,601.63 is: 394,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,028.19 : 710,740.44 = 285,601.63 : x
  2. Step 2: Convert to fraction form
    515,028.19/710,740.44 = 285,601.63/x
  3. Step 3: Cross multiply
    515,028.19x = 710,740.44 × 285,601.63
  4. Step 4: Simplify right side
    515,028.19x = 202,988,628,170.92
  5. Step 5: Solve for x
    x = 202,988,628,170.92/515,028.19
  6. Step 6: Final answer
    x = 394,131.10

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Double scale
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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.