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Finding the Fourth Proportional to 515,588.41, 711,597.51 and 300,728.46

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Solution

The fourth proportional to 515,588.41, 711,597.51 and 300,728.46 is: 415,055.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,588.41 : 711,597.51 = 300,728.46 : x
  2. Step 2: Convert to fraction form
    515,588.41/711,597.51 = 300,728.46/x
  3. Step 3: Cross multiply
    515,588.41x = 711,597.51 × 300,728.46
  4. Step 4: Simplify right side
    515,588.41x = 213,997,621,818.49
  5. Step 5: Solve for x
    x = 213,997,621,818.49/515,588.41
  6. Step 6: Final answer
    x = 415,055.15

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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.