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Finding the Fourth Proportional to 123,722.51, 170,737.09 and 70,006.45

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Solution

The fourth proportional to 123,722.51, 170,737.09 and 70,006.45 is: 96,608.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,722.51 : 170,737.09 = 70,006.45 : x
  2. Step 2: Convert to fraction form
    123,722.51/170,737.09 = 70,006.45/x
  3. Step 3: Cross multiply
    123,722.51x = 170,737.09 × 70,006.45
  4. Step 4: Simplify right side
    123,722.51x = 11,952,697,554.23
  5. Step 5: Solve for x
    x = 11,952,697,554.23/123,722.51
  6. Step 6: Final answer
    x = 96,608.92

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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.