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Finding the Fourth Proportional to 85,133,038.80, 127,699,558.20 and 85,133,038.80

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Solution

The fourth proportional to 85,133,038.80, 127,699,558.20 and 85,133,038.80 is: 127,699,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,133,038.80 : 127,699,558.20 = 85,133,038.80 : x
  2. Step 2: Convert to fraction form
    85,133,038.80/127,699,558.20 = 85,133,038.80/x
  3. Step 3: Cross multiply
    85,133,038.80x = 127,699,558.20 × 85,133,038.80
  4. Step 4: Simplify right side
    85,133,038.80x = 10,871,451,442,983,458
  5. Step 5: Solve for x
    x = 10,871,451,442,983,458/85,133,038.80
  6. Step 6: Final answer
    x = 127,699,558.20

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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.