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Finding the Fourth Proportional to 124,311.36, 186,525.36 and 61,986.72

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Solution

The fourth proportional to 124,311.36, 186,525.36 and 61,986.72 is: 93,009.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,311.36 : 186,525.36 = 61,986.72 : x
  2. Step 2: Convert to fraction form
    124,311.36/186,525.36 = 61,986.72/x
  3. Step 3: Cross multiply
    124,311.36x = 186,525.36 × 61,986.72
  4. Step 4: Simplify right side
    124,311.36x = 11,562,095,263.22
  5. Step 5: Solve for x
    x = 11,562,095,263.22/124,311.36
  6. Step 6: Final answer
    x = 93,009.16

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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.