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Finding the Fourth Proportional to 515,696.52, 711,625.53 and 286,235.74

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Solution

The fourth proportional to 515,696.52, 711,625.53 and 286,235.74 is: 394,985.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,696.52 : 711,625.53 = 286,235.74 : x
  2. Step 2: Convert to fraction form
    515,696.52/711,625.53 = 286,235.74/x
  3. Step 3: Cross multiply
    515,696.52x = 711,625.53 × 286,235.74
  4. Step 4: Simplify right side
    515,696.52x = 203,692,662,145.36
  5. Step 5: Solve for x
    x = 203,692,662,145.36/515,696.52
  6. Step 6: Final answer
    x = 394,985.52

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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.