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Finding the Fourth Proportional to 623,915.60, 935,873.40 and 518,939.60

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Solution

The fourth proportional to 623,915.60, 935,873.40 and 518,939.60 is: 778,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,915.60 : 935,873.40 = 518,939.60 : x
  2. Step 2: Convert to fraction form
    623,915.60/935,873.40 = 518,939.60/x
  3. Step 3: Cross multiply
    623,915.60x = 935,873.40 × 518,939.60
  4. Step 4: Simplify right side
    623,915.60x = 485,661,767,846.64
  5. Step 5: Solve for x
    x = 485,661,767,846.64/623,915.60
  6. Step 6: Final answer
    x = 778,409.40

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Similar ratio
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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.