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Finding the Fourth Proportional to 620,769.60, 856,598.22 and 348,794.28

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Solution

The fourth proportional to 620,769.60, 856,598.22 and 348,794.28 is: 481,300.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,769.60 : 856,598.22 = 348,794.28 : x
  2. Step 2: Convert to fraction form
    620,769.60/856,598.22 = 348,794.28/x
  3. Step 3: Cross multiply
    620,769.60x = 856,598.22 × 348,794.28
  4. Step 4: Simplify right side
    620,769.60x = 298,776,559,394.18
  5. Step 5: Solve for x
    x = 298,776,559,394.18/620,769.60
  6. Step 6: Final answer
    x = 481,300.24

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1.5x scale

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.