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Finding the Fourth Proportional to 3,460.56, 4,775.58 and 1,888.68

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Solution

The fourth proportional to 3,460.56, 4,775.58 and 1,888.68 is: 2,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.56 : 4,775.58 = 1,888.68 : x
  2. Step 2: Convert to fraction form
    3,460.56/4,775.58 = 1,888.68/x
  3. Step 3: Cross multiply
    3,460.56x = 4,775.58 × 1,888.68
  4. Step 4: Simplify right side
    3,460.56x = 9,019,542.43
  5. Step 5: Solve for x
    x = 9,019,542.43/3,460.56
  6. Step 6: Final answer
    x = 2,606.38

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Half scale
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Double scale
Find fourth proportional to 3,461.56, 4,776.96 and 1,889.68
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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.