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Finding the Fourth Proportional to 666,366.86, 999,549.07 and 217,087.20

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Solution

The fourth proportional to 666,366.86, 999,549.07 and 217,087.20 is: 325,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,366.86 : 999,549.07 = 217,087.20 : x
  2. Step 2: Convert to fraction form
    666,366.86/999,549.07 = 217,087.20/x
  3. Step 3: Cross multiply
    666,366.86x = 999,549.07 × 217,087.20
  4. Step 4: Simplify right side
    666,366.86x = 216,989,308,868.90
  5. Step 5: Solve for x
    x = 216,989,308,868.90/666,366.86
  6. Step 6: Final answer
    x = 325,630.40

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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.