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Finding the Fourth Proportional to 865,596.91, 1,298,333.86 and 266,495.60

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Solution

The fourth proportional to 865,596.91, 1,298,333.86 and 266,495.60 is: 399,724.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,596.91 : 1,298,333.86 = 266,495.60 : x
  2. Step 2: Convert to fraction form
    865,596.91/1,298,333.86 = 266,495.60/x
  3. Step 3: Cross multiply
    865,596.91x = 1,298,333.86 × 266,495.60
  4. Step 4: Simplify right side
    865,596.91x = 346,000,259,688.54
  5. Step 5: Solve for x
    x = 346,000,259,688.54/865,596.91
  6. Step 6: Final answer
    x = 399,724.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.