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Finding the Fourth Proportional to 620,014.55, 855,560.98 and 348,020.11

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Solution

The fourth proportional to 620,014.55, 855,560.98 and 348,020.11 is: 480,234.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,014.55 : 855,560.98 = 348,020.11 : x
  2. Step 2: Convert to fraction form
    620,014.55/855,560.98 = 348,020.11/x
  3. Step 3: Cross multiply
    620,014.55x = 855,560.98 × 348,020.11
  4. Step 4: Simplify right side
    620,014.55x = 297,752,423,362.36
  5. Step 5: Solve for x
    x = 297,752,423,362.36/620,014.55
  6. Step 6: Final answer
    x = 480,234.57

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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.