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Finding the Fourth Proportional to 104,976,091.80, 157,464,137.70 and 66,806,818.20

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Solution

The fourth proportional to 104,976,091.80, 157,464,137.70 and 66,806,818.20 is: 100,210,227.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,976,091.80 : 157,464,137.70 = 66,806,818.20 : x
  2. Step 2: Convert to fraction form
    104,976,091.80/157,464,137.70 = 66,806,818.20/x
  3. Step 3: Cross multiply
    104,976,091.80x = 157,464,137.70 × 66,806,818.20
  4. Step 4: Simplify right side
    104,976,091.80x = 10,519,678,020,343,666
  5. Step 5: Solve for x
    x = 10,519,678,020,343,666/104,976,091.80
  6. Step 6: Final answer
    x = 100,210,227.30

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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.