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Finding the Fourth Proportional to 666,880.51, 999,817.68 and 217,332.94

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Solution

The fourth proportional to 666,880.51, 999,817.68 and 217,332.94 is: 325,835.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,880.51 : 999,817.68 = 217,332.94 : x
  2. Step 2: Convert to fraction form
    666,880.51/999,817.68 = 217,332.94/x
  3. Step 3: Cross multiply
    666,880.51x = 999,817.68 × 217,332.94
  4. Step 4: Simplify right side
    666,880.51x = 217,293,315,858.38
  5. Step 5: Solve for x
    x = 217,293,315,858.38/666,880.51
  6. Step 6: Final answer
    x = 325,835.46

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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.