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Finding the Fourth Proportional to 666,350.62, 999,525.12 and 217,070.74

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Solution

The fourth proportional to 666,350.62, 999,525.12 and 217,070.74 is: 325,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,350.62 : 999,525.12 = 217,070.74 : x
  2. Step 2: Convert to fraction form
    666,350.62/999,525.12 = 217,070.74/x
  3. Step 3: Cross multiply
    666,350.62x = 999,525.12 × 217,070.74
  4. Step 4: Simplify right side
    666,350.62x = 216,967,657,446.99
  5. Step 5: Solve for x
    x = 216,967,657,446.99/666,350.62
  6. Step 6: Final answer
    x = 325,605.85

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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.