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Finding the Fourth Proportional to 669,340.66, 923,688.21 and 401,068.66

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Solution

The fourth proportional to 669,340.66, 923,688.21 and 401,068.66 is: 553,473.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,340.66 : 923,688.21 = 401,068.66 : x
  2. Step 2: Convert to fraction form
    669,340.66/923,688.21 = 401,068.66/x
  3. Step 3: Cross multiply
    669,340.66x = 923,688.21 × 401,068.66
  4. Step 4: Simplify right side
    669,340.66x = 370,462,392,642.50
  5. Step 5: Solve for x
    x = 370,462,392,642.50/669,340.66
  6. Step 6: Final answer
    x = 553,473.61

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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.