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Finding the Fourth Proportional to 153,298.20, 211,492.80 and 113,107.88

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Solution

The fourth proportional to 153,298.20, 211,492.80 and 113,107.88 is: 156,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,298.20 : 211,492.80 = 113,107.88 : x
  2. Step 2: Convert to fraction form
    153,298.20/211,492.80 = 113,107.88/x
  3. Step 3: Cross multiply
    153,298.20x = 211,492.80 × 113,107.88
  4. Step 4: Simplify right side
    153,298.20x = 23,921,502,243.26
  5. Step 5: Solve for x
    x = 23,921,502,243.26/153,298.20
  6. Step 6: Final answer
    x = 156,045.55

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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.