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Finding the Fourth Proportional to 668,911.26, 923,097.54 and 400,639.26

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Solution

The fourth proportional to 668,911.26, 923,097.54 and 400,639.26 is: 552,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,911.26 : 923,097.54 = 400,639.26 : x
  2. Step 2: Convert to fraction form
    668,911.26/923,097.54 = 400,639.26/x
  3. Step 3: Cross multiply
    668,911.26x = 923,097.54 × 400,639.26
  4. Step 4: Simplify right side
    668,911.26x = 369,829,115,333.42
  5. Step 5: Solve for x
    x = 369,829,115,333.42/668,911.26
  6. Step 6: Final answer
    x = 552,882.18

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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.