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Finding the Fourth Proportional to 522,058.40, 783,087.60 and 490,954.40

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Solution

The fourth proportional to 522,058.40, 783,087.60 and 490,954.40 is: 736,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,058.40 : 783,087.60 = 490,954.40 : x
  2. Step 2: Convert to fraction form
    522,058.40/783,087.60 = 490,954.40/x
  3. Step 3: Cross multiply
    522,058.40x = 783,087.60 × 490,954.40
  4. Step 4: Simplify right side
    522,058.40x = 384,460,302,805.44
  5. Step 5: Solve for x
    x = 384,460,302,805.44/522,058.40
  6. Step 6: Final answer
    x = 736,431.60

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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.