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Finding the Fourth Proportional to 136,751,479.80, 205,127,219.70 and 39,706,999.80

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Solution

The fourth proportional to 136,751,479.80, 205,127,219.70 and 39,706,999.80 is: 59,560,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,751,479.80 : 205,127,219.70 = 39,706,999.80 : x
  2. Step 2: Convert to fraction form
    136,751,479.80/205,127,219.70 = 39,706,999.80/x
  3. Step 3: Cross multiply
    136,751,479.80x = 205,127,219.70 × 39,706,999.80
  4. Step 4: Simplify right side
    136,751,479.80x = 8,144,986,471,602,455
  5. Step 5: Solve for x
    x = 8,144,986,471,602,455/136,751,479.80
  6. Step 6: Final answer
    x = 59,560,499.70

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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.