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Finding the Fourth Proportional to 124,590.64, 186,885 and 31,095.76

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Solution

The fourth proportional to 124,590.64, 186,885 and 31,095.76 is: 46,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,590.64 : 186,885 = 31,095.76 : x
  2. Step 2: Convert to fraction form
    124,590.64/186,885 = 31,095.76/x
  3. Step 3: Cross multiply
    124,590.64x = 186,885 × 31,095.76
  4. Step 4: Simplify right side
    124,590.64x = 5,811,331,107.60
  5. Step 5: Solve for x
    x = 5,811,331,107.60/124,590.64
  6. Step 6: Final answer
    x = 46,643.40

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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.