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Finding the Fourth Proportional to 118,937.80, 178,430.70 and 34,697.80

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Solution

The fourth proportional to 118,937.80, 178,430.70 and 34,697.80 is: 52,053.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,937.80 : 178,430.70 = 34,697.80 : x
  2. Step 2: Convert to fraction form
    118,937.80/178,430.70 = 34,697.80/x
  3. Step 3: Cross multiply
    118,937.80x = 178,430.70 × 34,697.80
  4. Step 4: Simplify right side
    118,937.80x = 6,191,152,742.46
  5. Step 5: Solve for x
    x = 6,191,152,742.46/118,937.80
  6. Step 6: Final answer
    x = 52,053.70

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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.