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Finding the Fourth Proportional to 523,701.12, 722,707.44 and 285,237.12

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Solution

The fourth proportional to 523,701.12, 722,707.44 and 285,237.12 is: 393,627.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,701.12 : 722,707.44 = 285,237.12 : x
  2. Step 2: Convert to fraction form
    523,701.12/722,707.44 = 285,237.12/x
  3. Step 3: Cross multiply
    523,701.12x = 722,707.44 × 285,237.12
  4. Step 4: Simplify right side
    523,701.12x = 206,142,988,788.17
  5. Step 5: Solve for x
    x = 206,142,988,788.17/523,701.12
  6. Step 6: Final answer
    x = 393,627.17

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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.