Home / 66,459.40-99,705.50-19,712.28

Finding the Fourth Proportional to 66,459.40, 99,705.50 and 19,712.28

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Solution

The fourth proportional to 66,459.40, 99,705.50 and 19,712.28 is: 29,573.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.40 : 99,705.50 = 19,712.28 : x
  2. Step 2: Convert to fraction form
    66,459.40/99,705.50 = 19,712.28/x
  3. Step 3: Cross multiply
    66,459.40x = 99,705.50 × 19,712.28
  4. Step 4: Simplify right side
    66,459.40x = 1,965,422,733.54
  5. Step 5: Solve for x
    x = 1,965,422,733.54/66,459.40
  6. Step 6: Final answer
    x = 29,573.28

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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.