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Finding the Fourth Proportional to 526,908.93, 727,136.54 and 285,191.45

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Solution

The fourth proportional to 526,908.93, 727,136.54 and 285,191.45 is: 393,565.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,908.93 : 727,136.54 = 285,191.45 : x
  2. Step 2: Convert to fraction form
    526,908.93/727,136.54 = 285,191.45/x
  3. Step 3: Cross multiply
    526,908.93x = 727,136.54 × 285,191.45
  4. Step 4: Simplify right side
    526,908.93x = 207,373,119,128.94
  5. Step 5: Solve for x
    x = 207,373,119,128.94/526,908.93
  6. Step 6: Final answer
    x = 393,565.39

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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.