Home / 66,460.16-99,690.40-19,713.60

Finding the Fourth Proportional to 66,460.16, 99,690.40 and 19,713.60

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Solution

The fourth proportional to 66,460.16, 99,690.40 and 19,713.60 is: 29,570.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.16 : 99,690.40 = 19,713.60 : x
  2. Step 2: Convert to fraction form
    66,460.16/99,690.40 = 19,713.60/x
  3. Step 3: Cross multiply
    66,460.16x = 99,690.40 × 19,713.60
  4. Step 4: Simplify right side
    66,460.16x = 1,965,256,669.44
  5. Step 5: Solve for x
    x = 1,965,256,669.44/66,460.16
  6. Step 6: Final answer
    x = 29,570.45

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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.