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Finding the Fourth Proportional to 620,580.30, 856,512.27 and 365,916.30

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Solution

The fourth proportional to 620,580.30, 856,512.27 and 365,916.30 is: 505,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,580.30 : 856,512.27 = 365,916.30 : x
  2. Step 2: Convert to fraction form
    620,580.30/856,512.27 = 365,916.30/x
  3. Step 3: Cross multiply
    620,580.30x = 856,512.27 × 365,916.30
  4. Step 4: Simplify right side
    620,580.30x = 313,411,800,743.00
  5. Step 5: Solve for x
    x = 313,411,800,743.00/620,580.30
  6. Step 6: Final answer
    x = 505,030.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.