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Finding the Fourth Proportional to 456,929.40, 685,393.94 and 124,505.40

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Solution

The fourth proportional to 456,929.40, 685,393.94 and 124,505.40 is: 186,758.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,929.40 : 685,393.94 = 124,505.40 : x
  2. Step 2: Convert to fraction form
    456,929.40/685,393.94 = 124,505.40/x
  3. Step 3: Cross multiply
    456,929.40x = 685,393.94 × 124,505.40
  4. Step 4: Simplify right side
    456,929.40x = 85,335,246,657.28
  5. Step 5: Solve for x
    x = 85,335,246,657.28/456,929.40
  6. Step 6: Final answer
    x = 186,758.06

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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.