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Finding the Fourth Proportional to 1,258,583.23, 1,736,829.18 and 685,611.10

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Solution

The fourth proportional to 1,258,583.23, 1,736,829.18 and 685,611.10 is: 946,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,583.23 : 1,736,829.18 = 685,611.10 : x
  2. Step 2: Convert to fraction form
    1,258,583.23/1,736,829.18 = 685,611.10/x
  3. Step 3: Cross multiply
    1,258,583.23x = 1,736,829.18 × 685,611.10
  4. Step 4: Simplify right side
    1,258,583.23x = 1,190,789,364,611.90
  5. Step 5: Solve for x
    x = 1,190,789,364,611.90/1,258,583.23
  6. Step 6: Final answer
    x = 946,134.78

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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.