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Finding the Fourth Proportional to 666,976.74, 919,806.08 and 617,437.04

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Solution

The fourth proportional to 666,976.74, 919,806.08 and 617,437.04 is: 851,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,976.74 : 919,806.08 = 617,437.04 : x
  2. Step 2: Convert to fraction form
    666,976.74/919,806.08 = 617,437.04/x
  3. Step 3: Cross multiply
    666,976.74x = 919,806.08 × 617,437.04
  4. Step 4: Simplify right side
    666,976.74x = 567,922,343,409.20
  5. Step 5: Solve for x
    x = 567,922,343,409.20/666,976.74
  6. Step 6: Final answer
    x = 851,487.48

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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.