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Finding the Fourth Proportional to 526,683, 726,823.98 and 288,219

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Solution

The fourth proportional to 526,683, 726,823.98 and 288,219 is: 397,743.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,683 : 726,823.98 = 288,219 : x
  2. Step 2: Convert to fraction form
    526,683/726,823.98 = 288,219/x
  3. Step 3: Cross multiply
    526,683x = 726,823.98 × 288,219
  4. Step 4: Simplify right side
    526,683x = 209,484,480,691.62
  5. Step 5: Solve for x
    x = 209,484,480,691.62/526,683
  6. Step 6: Final answer
    x = 397,743.01

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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.