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Finding the Fourth Proportional to 46,647.40, 69,971.10 and 45,675.40

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Solution

The fourth proportional to 46,647.40, 69,971.10 and 45,675.40 is: 68,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,647.40 : 69,971.10 = 45,675.40 : x
  2. Step 2: Convert to fraction form
    46,647.40/69,971.10 = 45,675.40/x
  3. Step 3: Cross multiply
    46,647.40x = 69,971.10 × 45,675.40
  4. Step 4: Simplify right side
    46,647.40x = 3,195,957,980.94
  5. Step 5: Solve for x
    x = 3,195,957,980.94/46,647.40
  6. Step 6: Final answer
    x = 68,513.10

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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.