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Finding the Fourth Proportional to 1,258,602.28, 1,736,868.74 and 685,642.30

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Solution

The fourth proportional to 1,258,602.28, 1,736,868.74 and 685,642.30 is: 946,185.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,602.28 : 1,736,868.74 = 685,642.30 : x
  2. Step 2: Convert to fraction form
    1,258,602.28/1,736,868.74 = 685,642.30/x
  3. Step 3: Cross multiply
    1,258,602.28x = 1,736,868.74 × 685,642.30
  4. Step 4: Simplify right side
    1,258,602.28x = 1,190,870,677,691.70
  5. Step 5: Solve for x
    x = 1,190,870,677,691.70/1,258,602.28
  6. Step 6: Final answer
    x = 946,185.06

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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.