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Finding the Fourth Proportional to 1,195,955,999.20, 1,670,256,932 and 1,195,955,999.20

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Solution

The fourth proportional to 1,195,955,999.20, 1,670,256,932 and 1,195,955,999.20 is: 1,670,256,932

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195,955,999.20 : 1,670,256,932 = 1,195,955,999.20 : x
  2. Step 2: Convert to fraction form
    1,195,955,999.20/1,670,256,932 = 1,195,955,999.20/x
  3. Step 3: Cross multiply
    1,195,955,999.20x = 1,670,256,932 × 1,195,955,999.20
  4. Step 4: Simplify right side
    1,195,955,999.20x = 1,997,553,798,030,786,560
  5. Step 5: Solve for x
    x = 1,997,553,798,030,786,560/1,195,955,999.20
  6. Step 6: Final answer
    x = 1,670,256,932

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.