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Finding the Fourth Proportional to 116,874.95, 175,312.46 and 28,128.45

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Solution

The fourth proportional to 116,874.95, 175,312.46 and 28,128.45 is: 42,192.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,874.95 : 175,312.46 = 28,128.45 : x
  2. Step 2: Convert to fraction form
    116,874.95/175,312.46 = 28,128.45/x
  3. Step 3: Cross multiply
    116,874.95x = 175,312.46 × 28,128.45
  4. Step 4: Simplify right side
    116,874.95x = 4,931,267,923.35
  5. Step 5: Solve for x
    x = 4,931,267,923.35/116,874.95
  6. Step 6: Final answer
    x = 42,192.69

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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.