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Finding the Fourth Proportional to 666,351.72, 999,526.77 and 217,071.85

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Solution

The fourth proportional to 666,351.72, 999,526.77 and 217,071.85 is: 325,607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,351.72 : 999,526.77 = 217,071.85 : x
  2. Step 2: Convert to fraction form
    666,351.72/999,526.77 = 217,071.85/x
  3. Step 3: Cross multiply
    666,351.72x = 999,526.77 × 217,071.85
  4. Step 4: Simplify right side
    666,351.72x = 216,969,125,088.43
  5. Step 5: Solve for x
    x = 216,969,125,088.43/666,351.72
  6. Step 6: Final answer
    x = 325,607.51

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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.