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Finding the Fourth Proportional to 858,762,002.95, 1,288,143,004.43 and 858,762,002.95

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Solution

The fourth proportional to 858,762,002.95, 1,288,143,004.43 and 858,762,002.95 is: 1,288,143,004.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,762,002.95 : 1,288,143,004.43 = 858,762,002.95 : x
  2. Step 2: Convert to fraction form
    858,762,002.95/1,288,143,004.43 = 858,762,002.95/x
  3. Step 3: Cross multiply
    858,762,002.95x = 1,288,143,004.43 × 858,762,002.95
  4. Step 4: Simplify right side
    858,762,002.95x = 1,106,208,266,570,337,664
  5. Step 5: Solve for x
    x = 1,106,208,266,570,337,664/858,762,002.95
  6. Step 6: Final answer
    x = 1,288,143,004.43

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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.