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Finding the Fourth Proportional to 885,737,114.10, 1,328,605,671.15 and 639,573,642.90

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Solution

The fourth proportional to 885,737,114.10, 1,328,605,671.15 and 639,573,642.90 is: 959,360,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,737,114.10 : 1,328,605,671.15 = 639,573,642.90 : x
  2. Step 2: Convert to fraction form
    885,737,114.10/1,328,605,671.15 = 639,573,642.90/x
  3. Step 3: Cross multiply
    885,737,114.10x = 1,328,605,671.15 × 639,573,642.90
  4. Step 4: Simplify right side
    885,737,114.10x = 849,741,169,075,004,928
  5. Step 5: Solve for x
    x = 849,741,169,075,004,928/885,737,114.10
  6. Step 6: Final answer
    x = 959,360,464.35

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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.