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Finding the Fourth Proportional to 112,039.70, 168,059.55 and 70,567.70

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Solution

The fourth proportional to 112,039.70, 168,059.55 and 70,567.70 is: 105,851.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,039.70 : 168,059.55 = 70,567.70 : x
  2. Step 2: Convert to fraction form
    112,039.70/168,059.55 = 70,567.70/x
  3. Step 3: Cross multiply
    112,039.70x = 168,059.55 × 70,567.70
  4. Step 4: Simplify right side
    112,039.70x = 11,859,575,906.54
  5. Step 5: Solve for x
    x = 11,859,575,906.54/112,039.70
  6. Step 6: Final answer
    x = 105,851.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.