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Finding the Fourth Proportional to 692,881.57, 949,231.87 and 666,976.47

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Solution

The fourth proportional to 692,881.57, 949,231.87 and 666,976.47 is: 913,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,881.57 : 949,231.87 = 666,976.47 : x
  2. Step 2: Convert to fraction form
    692,881.57/949,231.87 = 666,976.47/x
  3. Step 3: Cross multiply
    692,881.57x = 949,231.87 × 666,976.47
  4. Step 4: Simplify right side
    692,881.57x = 633,115,316,637.04
  5. Step 5: Solve for x
    x = 633,115,316,637.04/692,881.57
  6. Step 6: Final answer
    x = 913,742.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.