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Finding the Fourth Proportional to 415,557.20, 623,368.20 and 178,907.60

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Solution

The fourth proportional to 415,557.20, 623,368.20 and 178,907.60 is: 268,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,557.20 : 623,368.20 = 178,907.60 : x
  2. Step 2: Convert to fraction form
    415,557.20/623,368.20 = 178,907.60/x
  3. Step 3: Cross multiply
    415,557.20x = 623,368.20 × 178,907.60
  4. Step 4: Simplify right side
    415,557.20x = 111,525,308,578.32
  5. Step 5: Solve for x
    x = 111,525,308,578.32/415,557.20
  6. Step 6: Final answer
    x = 268,375.35

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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.