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Finding the Fourth Proportional to 859,452,318.15, 1,289,178,477.23 and 859,452,318.15

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Solution

The fourth proportional to 859,452,318.15, 1,289,178,477.23 and 859,452,318.15 is: 1,289,178,477.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,452,318.15 : 1,289,178,477.23 = 859,452,318.15 : x
  2. Step 2: Convert to fraction form
    859,452,318.15/1,289,178,477.23 = 859,452,318.15/x
  3. Step 3: Cross multiply
    859,452,318.15x = 1,289,178,477.23 × 859,452,318.15
  4. Step 4: Simplify right side
    859,452,318.15x = 1,107,987,430,760,113,152
  5. Step 5: Solve for x
    x = 1,107,987,430,760,113,152/859,452,318.15
  6. Step 6: Final answer
    x = 1,289,178,477.23

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1.5x scale

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.