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Finding the Fourth Proportional to 669,070.74, 923,318.93 and 397,193.16

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Solution

The fourth proportional to 669,070.74, 923,318.93 and 397,193.16 is: 548,127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,070.74 : 923,318.93 = 397,193.16 : x
  2. Step 2: Convert to fraction form
    669,070.74/923,318.93 = 397,193.16/x
  3. Step 3: Cross multiply
    669,070.74x = 923,318.93 × 397,193.16
  4. Step 4: Simplify right side
    669,070.74x = 366,735,963,494.52
  5. Step 5: Solve for x
    x = 366,735,963,494.52/669,070.74
  6. Step 6: Final answer
    x = 548,127.34

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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.