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Finding the Fourth Proportional to 98,953.50, 136,556.31 and 59,209.50

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Solution

The fourth proportional to 98,953.50, 136,556.31 and 59,209.50 is: 81,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,953.50 : 136,556.31 = 59,209.50 : x
  2. Step 2: Convert to fraction form
    98,953.50/136,556.31 = 59,209.50/x
  3. Step 3: Cross multiply
    98,953.50x = 136,556.31 × 59,209.50
  4. Step 4: Simplify right side
    98,953.50x = 8,085,430,836.95
  5. Step 5: Solve for x
    x = 8,085,430,836.95/98,953.50
  6. Step 6: Final answer
    x = 81,709.40

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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.