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Finding the Fourth Proportional to 1,258,579.60, 1,736,831.32 and 685,620.16

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Solution

The fourth proportional to 1,258,579.60, 1,736,831.32 and 685,620.16 is: 946,151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,579.60 : 1,736,831.32 = 685,620.16 : x
  2. Step 2: Convert to fraction form
    1,258,579.60/1,736,831.32 = 685,620.16/x
  3. Step 3: Cross multiply
    1,258,579.60x = 1,736,831.32 × 685,620.16
  4. Step 4: Simplify right side
    1,258,579.60x = 1,190,806,567,511.41
  5. Step 5: Solve for x
    x = 1,190,806,567,511.41/1,258,579.60
  6. Step 6: Final answer
    x = 946,151.18

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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.