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Finding the Fourth Proportional to 707,959,811.70, 976,674,603.30 and 675,136,686.78

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Solution

The fourth proportional to 707,959,811.70, 976,674,603.30 and 675,136,686.78 is: 931,393,060.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,959,811.70 : 976,674,603.30 = 675,136,686.78 : x
  2. Step 2: Convert to fraction form
    707,959,811.70/976,674,603.30 = 675,136,686.78/x
  3. Step 3: Cross multiply
    707,959,811.70x = 976,674,603.30 × 675,136,686.78
  4. Step 4: Simplify right side
    707,959,811.70x = 659,388,855,734,132,736
  5. Step 5: Solve for x
    x = 659,388,855,734,132,736/707,959,811.70
  6. Step 6: Final answer
    x = 931,393,060.51

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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.