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Finding the Fourth Proportional to 640,162.76, 882,675.24 and 436,334.36

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Solution

The fourth proportional to 640,162.76, 882,675.24 and 436,334.36 is: 601,630.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,162.76 : 882,675.24 = 436,334.36 : x
  2. Step 2: Convert to fraction form
    640,162.76/882,675.24 = 436,334.36/x
  3. Step 3: Cross multiply
    640,162.76x = 882,675.24 × 436,334.36
  4. Step 4: Simplify right side
    640,162.76x = 385,141,535,933.25
  5. Step 5: Solve for x
    x = 385,141,535,933.25/640,162.76
  6. Step 6: Final answer
    x = 601,630.65

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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.