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Finding the Fourth Proportional to 153,536.51, 211,880.85 and 89,018.30

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Solution

The fourth proportional to 153,536.51, 211,880.85 and 89,018.30 is: 122,845.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,536.51 : 211,880.85 = 89,018.30 : x
  2. Step 2: Convert to fraction form
    153,536.51/211,880.85 = 89,018.30/x
  3. Step 3: Cross multiply
    153,536.51x = 211,880.85 × 89,018.30
  4. Step 4: Simplify right side
    153,536.51x = 18,861,273,069.56
  5. Step 5: Solve for x
    x = 18,861,273,069.56/153,536.51
  6. Step 6: Final answer
    x = 122,845.52

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1.5x scale

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.