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Finding the Fourth Proportional to 61,886.64, 92,831.76 and 15,139.50

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Solution

The fourth proportional to 61,886.64, 92,831.76 and 15,139.50 is: 22,709.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,886.64 : 92,831.76 = 15,139.50 : x
  2. Step 2: Convert to fraction form
    61,886.64/92,831.76 = 15,139.50/x
  3. Step 3: Cross multiply
    61,886.64x = 92,831.76 × 15,139.50
  4. Step 4: Simplify right side
    61,886.64x = 1,405,426,430.52
  5. Step 5: Solve for x
    x = 1,405,426,430.52/61,886.64
  6. Step 6: Final answer
    x = 22,709.69

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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.