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Finding the Fourth Proportional to 72,609,568.80, 101,908,488 and 72,609,568.80

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Solution

The fourth proportional to 72,609,568.80, 101,908,488 and 72,609,568.80 is: 101,908,488

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,609,568.80 : 101,908,488 = 72,609,568.80 : x
  2. Step 2: Convert to fraction form
    72,609,568.80/101,908,488 = 72,609,568.80/x
  3. Step 3: Cross multiply
    72,609,568.80x = 101,908,488 × 72,609,568.80
  4. Step 4: Simplify right side
    72,609,568.80x = 7,399,531,370,739,974
  5. Step 5: Solve for x
    x = 7,399,531,370,739,974/72,609,568.80
  6. Step 6: Final answer
    x = 101,908,488

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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.