Home / 66,410.16-99,615.40-19,663.60

Finding the Fourth Proportional to 66,410.16, 99,615.40 and 19,663.60

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Solution

The fourth proportional to 66,410.16, 99,615.40 and 19,663.60 is: 29,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.16 : 99,615.40 = 19,663.60 : x
  2. Step 2: Convert to fraction form
    66,410.16/99,615.40 = 19,663.60/x
  3. Step 3: Cross multiply
    66,410.16x = 99,615.40 × 19,663.60
  4. Step 4: Simplify right side
    66,410.16x = 1,958,797,379.44
  5. Step 5: Solve for x
    x = 1,958,797,379.44/66,410.16
  6. Step 6: Final answer
    x = 29,495.45

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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.