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Finding the Fourth Proportional to 153,598.62, 211,967.04 and 85,619.91

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Solution

The fourth proportional to 153,598.62, 211,967.04 and 85,619.91 is: 118,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,598.62 : 211,967.04 = 85,619.91 : x
  2. Step 2: Convert to fraction form
    153,598.62/211,967.04 = 85,619.91/x
  3. Step 3: Cross multiply
    153,598.62x = 211,967.04 × 85,619.91
  4. Step 4: Simplify right side
    153,598.62x = 18,148,598,887.77
  5. Step 5: Solve for x
    x = 18,148,598,887.77/153,598.62
  6. Step 6: Final answer
    x = 118,156.00

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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.