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Finding the Fourth Proportional to 669,341.66, 923,689.59 and 401,069.66

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Solution

The fourth proportional to 669,341.66, 923,689.59 and 401,069.66 is: 553,474.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,341.66 : 923,689.59 = 401,069.66 : x
  2. Step 2: Convert to fraction form
    669,341.66/923,689.59 = 401,069.66/x
  3. Step 3: Cross multiply
    669,341.66x = 923,689.59 × 401,069.66
  4. Step 4: Simplify right side
    669,341.66x = 370,463,869,806.84
  5. Step 5: Solve for x
    x = 370,463,869,806.84/669,341.66
  6. Step 6: Final answer
    x = 553,474.99

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.