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Finding the Fourth Proportional to 70,023.04, 105,036 and 39,055.36

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Solution

The fourth proportional to 70,023.04, 105,036 and 39,055.36 is: 58,583.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,023.04 : 105,036 = 39,055.36 : x
  2. Step 2: Convert to fraction form
    70,023.04/105,036 = 39,055.36/x
  3. Step 3: Cross multiply
    70,023.04x = 105,036 × 39,055.36
  4. Step 4: Simplify right side
    70,023.04x = 4,102,218,792.96
  5. Step 5: Solve for x
    x = 4,102,218,792.96/70,023.04
  6. Step 6: Final answer
    x = 58,583.84

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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.