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Finding the Fourth Proportional to 624,960.40, 936,128.40 and 519,984.40

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Solution

The fourth proportional to 624,960.40, 936,128.40 and 519,984.40 is: 778,884.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,960.40 : 936,128.40 = 519,984.40 : x
  2. Step 2: Convert to fraction form
    624,960.40/936,128.40 = 519,984.40/x
  3. Step 3: Cross multiply
    624,960.40x = 936,128.40 × 519,984.40
  4. Step 4: Simplify right side
    624,960.40x = 486,772,164,396.96
  5. Step 5: Solve for x
    x = 486,772,164,396.96/624,960.40
  6. Step 6: Final answer
    x = 778,884.81

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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.