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Finding the Fourth Proportional to 522,040.70, 783,061.05 and 312,088.70

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Solution

The fourth proportional to 522,040.70, 783,061.05 and 312,088.70 is: 468,133.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,040.70 : 783,061.05 = 312,088.70 : x
  2. Step 2: Convert to fraction form
    522,040.70/783,061.05 = 312,088.70/x
  3. Step 3: Cross multiply
    522,040.70x = 783,061.05 × 312,088.70
  4. Step 4: Simplify right side
    522,040.70x = 244,384,505,115.14
  5. Step 5: Solve for x
    x = 244,384,505,115.14/522,040.70
  6. Step 6: Final answer
    x = 468,133.05

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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.