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Finding the Fourth Proportional to 170,981.98, 236,020.98 and 153,045.34

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Solution

The fourth proportional to 170,981.98, 236,020.98 and 153,045.34 is: 211,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,981.98 : 236,020.98 = 153,045.34 : x
  2. Step 2: Convert to fraction form
    170,981.98/236,020.98 = 153,045.34/x
  3. Step 3: Cross multiply
    170,981.98x = 236,020.98 × 153,045.34
  4. Step 4: Simplify right side
    170,981.98x = 36,121,911,131.23
  5. Step 5: Solve for x
    x = 36,121,911,131.23/170,981.98
  6. Step 6: Final answer
    x = 211,261.51

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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.