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Finding the Fourth Proportional to 456,928.40, 685,392.44 and 124,504.40

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Solution

The fourth proportional to 456,928.40, 685,392.44 and 124,504.40 is: 186,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,928.40 : 685,392.44 = 124,504.40 : x
  2. Step 2: Convert to fraction form
    456,928.40/685,392.44 = 124,504.40/x
  3. Step 3: Cross multiply
    456,928.40x = 685,392.44 × 124,504.40
  4. Step 4: Simplify right side
    456,928.40x = 85,334,374,506.74
  5. Step 5: Solve for x
    x = 85,334,374,506.74/456,928.40
  6. Step 6: Final answer
    x = 186,756.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.