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Finding the Fourth Proportional to 693,450,601.98, 956,963,109.70 and 375,909,865.98

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Solution

The fourth proportional to 693,450,601.98, 956,963,109.70 and 375,909,865.98 is: 518,756,308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,450,601.98 : 956,963,109.70 = 375,909,865.98 : x
  2. Step 2: Convert to fraction form
    693,450,601.98/956,963,109.70 = 375,909,865.98/x
  3. Step 3: Cross multiply
    693,450,601.98x = 956,963,109.70 × 375,909,865.98
  4. Step 4: Simplify right side
    693,450,601.98x = 359,731,874,315,131,072
  5. Step 5: Solve for x
    x = 359,731,874,315,131,072/693,450,601.98
  6. Step 6: Final answer
    x = 518,756,308.36

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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.