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Finding the Fourth Proportional to 624,966.40, 936,137.40 and 519,990.40

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Solution

The fourth proportional to 624,966.40, 936,137.40 and 519,990.40 is: 778,893.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,966.40 : 936,137.40 = 519,990.40 : x
  2. Step 2: Convert to fraction form
    624,966.40/936,137.40 = 519,990.40/x
  3. Step 3: Cross multiply
    624,966.40x = 936,137.40 × 519,990.40
  4. Step 4: Simplify right side
    624,966.40x = 486,782,461,080.96
  5. Step 5: Solve for x
    x = 486,782,461,080.96/624,966.40
  6. Step 6: Final answer
    x = 778,893.81

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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.