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Finding the Fourth Proportional to 61,865.61, 92,756.75 and 28,567.32

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Solution

The fourth proportional to 61,865.61, 92,756.75 and 28,567.32 is: 42,831.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,865.61 : 92,756.75 = 28,567.32 : x
  2. Step 2: Convert to fraction form
    61,865.61/92,756.75 = 28,567.32/x
  3. Step 3: Cross multiply
    61,865.61x = 92,756.75 × 28,567.32
  4. Step 4: Simplify right side
    61,865.61x = 2,649,811,616.57
  5. Step 5: Solve for x
    x = 2,649,811,616.57/61,865.61
  6. Step 6: Final answer
    x = 42,831.74

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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.