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Finding the Fourth Proportional to 153,094.70, 211,373.78 and 136,911.80

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Solution

The fourth proportional to 153,094.70, 211,373.78 and 136,911.80 is: 189,030.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,094.70 : 211,373.78 = 136,911.80 : x
  2. Step 2: Convert to fraction form
    153,094.70/211,373.78 = 136,911.80/x
  3. Step 3: Cross multiply
    153,094.70x = 211,373.78 × 136,911.80
  4. Step 4: Simplify right side
    153,094.70x = 28,939,564,692.60
  5. Step 5: Solve for x
    x = 28,939,564,692.60/153,094.70
  6. Step 6: Final answer
    x = 189,030.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.