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Finding the Fourth Proportional to 100,104,148.80, 140,448,139.20 and 100,104,148.80

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Solution

The fourth proportional to 100,104,148.80, 140,448,139.20 and 100,104,148.80 is: 140,448,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,104,148.80 : 140,448,139.20 = 100,104,148.80 : x
  2. Step 2: Convert to fraction form
    100,104,148.80/140,448,139.20 = 100,104,148.80/x
  3. Step 3: Cross multiply
    100,104,148.80x = 140,448,139.20 × 100,104,148.80
  4. Step 4: Simplify right side
    100,104,148.80x = 14,059,441,425,159,912
  5. Step 5: Solve for x
    x = 14,059,441,425,159,912/100,104,148.80
  6. Step 6: Final answer
    x = 140,448,139.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.