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Finding the Fourth Proportional to 666,349.11, 999,522.90 and 217,069.26

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Solution

The fourth proportional to 666,349.11, 999,522.90 and 217,069.26 is: 325,603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,349.11 : 999,522.90 = 217,069.26 : x
  2. Step 2: Convert to fraction form
    666,349.11/999,522.90 = 217,069.26/x
  3. Step 3: Cross multiply
    666,349.11x = 999,522.90 × 217,069.26
  4. Step 4: Simplify right side
    666,349.11x = 216,965,700,004.27
  5. Step 5: Solve for x
    x = 216,965,700,004.27/666,349.11
  6. Step 6: Final answer
    x = 325,603.64

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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.