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Finding the Fourth Proportional to 46,570.81, 69,856.86 and 13,290.87

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Solution

The fourth proportional to 46,570.81, 69,856.86 and 13,290.87 is: 19,936.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,570.81 : 69,856.86 = 13,290.87 : x
  2. Step 2: Convert to fraction form
    46,570.81/69,856.86 = 13,290.87/x
  3. Step 3: Cross multiply
    46,570.81x = 69,856.86 × 13,290.87
  4. Step 4: Simplify right side
    46,570.81x = 928,458,444.87
  5. Step 5: Solve for x
    x = 928,458,444.87/46,570.81
  6. Step 6: Final answer
    x = 19,936.49

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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.