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Finding the Fourth Proportional to 519,716.50, 779,574.78 and 125,732.50

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Solution

The fourth proportional to 519,716.50, 779,574.78 and 125,732.50 is: 188,598.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,716.50 : 779,574.78 = 125,732.50 : x
  2. Step 2: Convert to fraction form
    519,716.50/779,574.78 = 125,732.50/x
  3. Step 3: Cross multiply
    519,716.50x = 779,574.78 × 125,732.50
  4. Step 4: Simplify right side
    519,716.50x = 98,017,886,026.35
  5. Step 5: Solve for x
    x = 98,017,886,026.35/519,716.50
  6. Step 6: Final answer
    x = 188,598.76

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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.