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Finding the Fourth Proportional to 153,347.99, 211,618.71 and 85,363.88

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Solution

The fourth proportional to 153,347.99, 211,618.71 and 85,363.88 is: 117,801.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,347.99 : 211,618.71 = 85,363.88 : x
  2. Step 2: Convert to fraction form
    153,347.99/211,618.71 = 85,363.88/x
  3. Step 3: Cross multiply
    153,347.99x = 211,618.71 × 85,363.88
  4. Step 4: Simplify right side
    153,347.99x = 18,064,593,108.10
  5. Step 5: Solve for x
    x = 18,064,593,108.10/153,347.99
  6. Step 6: Final answer
    x = 117,801.31

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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.