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Finding the Fourth Proportional to 129,159.04, 192,608.40 and 127,978.08

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Solution

The fourth proportional to 129,159.04, 192,608.40 and 127,978.08 is: 190,847.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,159.04 : 192,608.40 = 127,978.08 : x
  2. Step 2: Convert to fraction form
    129,159.04/192,608.40 = 127,978.08/x
  3. Step 3: Cross multiply
    129,159.04x = 192,608.40 × 127,978.08
  4. Step 4: Simplify right side
    129,159.04x = 24,649,653,223.87
  5. Step 5: Solve for x
    x = 24,649,653,223.87/129,159.04
  6. Step 6: Final answer
    x = 190,847.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.