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Finding the Fourth Proportional to 579,938.40, 869,907.60 and 534,448.80

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Solution

The fourth proportional to 579,938.40, 869,907.60 and 534,448.80 is: 801,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,938.40 : 869,907.60 = 534,448.80 : x
  2. Step 2: Convert to fraction form
    579,938.40/869,907.60 = 534,448.80/x
  3. Step 3: Cross multiply
    579,938.40x = 869,907.60 × 534,448.80
  4. Step 4: Simplify right side
    579,938.40x = 464,921,072,930.88
  5. Step 5: Solve for x
    x = 464,921,072,930.88/579,938.40
  6. Step 6: Final answer
    x = 801,673.20

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Double scale
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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.