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Finding the Fourth Proportional to 670,804,961.40, 925,732,913.40 and 369,422,408.34

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Solution

The fourth proportional to 670,804,961.40, 925,732,913.40 and 369,422,408.34 is: 509,815,075.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,804,961.40 : 925,732,913.40 = 369,422,408.34 : x
  2. Step 2: Convert to fraction form
    670,804,961.40/925,732,913.40 = 369,422,408.34/x
  3. Step 3: Cross multiply
    670,804,961.40x = 925,732,913.40 × 369,422,408.34
  4. Step 4: Simplify right side
    670,804,961.40x = 341,986,482,347,832,640
  5. Step 5: Solve for x
    x = 341,986,482,347,832,640/670,804,961.40
  6. Step 6: Final answer
    x = 509,815,075.96

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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.