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Finding the Fourth Proportional to 456,788.80, 685,183.20 and 124,364.80

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Solution

The fourth proportional to 456,788.80, 685,183.20 and 124,364.80 is: 186,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,788.80 : 685,183.20 = 124,364.80 : x
  2. Step 2: Convert to fraction form
    456,788.80/685,183.20 = 124,364.80/x
  3. Step 3: Cross multiply
    456,788.80x = 685,183.20 × 124,364.80
  4. Step 4: Simplify right side
    456,788.80x = 85,212,671,631.36
  5. Step 5: Solve for x
    x = 85,212,671,631.36/456,788.80
  6. Step 6: Final answer
    x = 186,547.20

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Similar ratio
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1.5x scale

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.