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Finding the Fourth Proportional to 153,179.08, 211,385.10 and 86,111.08

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Solution

The fourth proportional to 153,179.08, 211,385.10 and 86,111.08 is: 118,832.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,179.08 : 211,385.10 = 86,111.08 : x
  2. Step 2: Convert to fraction form
    153,179.08/211,385.10 = 86,111.08/x
  3. Step 3: Cross multiply
    153,179.08x = 211,385.10 × 86,111.08
  4. Step 4: Simplify right side
    153,179.08x = 18,202,599,256.91
  5. Step 5: Solve for x
    x = 18,202,599,256.91/153,179.08
  6. Step 6: Final answer
    x = 118,832.15

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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.