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Finding the Fourth Proportional to 66,133.40, 99,054.30 and 58,746.20

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Solution

The fourth proportional to 66,133.40, 99,054.30 and 58,746.20 is: 87,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,133.40 : 99,054.30 = 58,746.20 : x
  2. Step 2: Convert to fraction form
    66,133.40/99,054.30 = 58,746.20/x
  3. Step 3: Cross multiply
    66,133.40x = 99,054.30 × 58,746.20
  4. Step 4: Simplify right side
    66,133.40x = 5,819,063,718.66
  5. Step 5: Solve for x
    x = 5,819,063,718.66/66,133.40
  6. Step 6: Final answer
    x = 87,989.79

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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.