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Finding the Fourth Proportional to 668,909.25, 923,094.78 and 400,637.25

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Solution

The fourth proportional to 668,909.25, 923,094.78 and 400,637.25 is: 552,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,909.25 : 923,094.78 = 400,637.25 : x
  2. Step 2: Convert to fraction form
    668,909.25/923,094.78 = 400,637.25/x
  3. Step 3: Cross multiply
    668,909.25x = 923,094.78 × 400,637.25
  4. Step 4: Simplify right side
    668,909.25x = 369,826,154,148.56
  5. Step 5: Solve for x
    x = 369,826,154,148.56/668,909.25
  6. Step 6: Final answer
    x = 552,879.41

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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.