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Finding the Fourth Proportional to 669,338.66, 923,685.45 and 401,066.66

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Solution

The fourth proportional to 669,338.66, 923,685.45 and 401,066.66 is: 553,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,338.66 : 923,685.45 = 401,066.66 : x
  2. Step 2: Convert to fraction form
    669,338.66/923,685.45 = 401,066.66/x
  3. Step 3: Cross multiply
    669,338.66x = 923,685.45 × 401,066.66
  4. Step 4: Simplify right side
    669,338.66x = 370,459,438,322.10
  5. Step 5: Solve for x
    x = 370,459,438,322.10/669,338.66
  6. Step 6: Final answer
    x = 553,470.85

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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.