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Finding the Fourth Proportional to 86,133.78, 118,868.59 and 47,897.20

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Solution

The fourth proportional to 86,133.78, 118,868.59 and 47,897.20 is: 66,100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,133.78 : 118,868.59 = 47,897.20 : x
  2. Step 2: Convert to fraction form
    86,133.78/118,868.59 = 47,897.20/x
  3. Step 3: Cross multiply
    86,133.78x = 118,868.59 × 47,897.20
  4. Step 4: Simplify right side
    86,133.78x = 5,693,472,628.95
  5. Step 5: Solve for x
    x = 5,693,472,628.95/86,133.78
  6. Step 6: Final answer
    x = 66,100.35

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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.