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Finding the Fourth Proportional to 143,855,999.80, 215,783,999.70 and 63,076,967.80

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Solution

The fourth proportional to 143,855,999.80, 215,783,999.70 and 63,076,967.80 is: 94,615,451.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,855,999.80 : 215,783,999.70 = 63,076,967.80 : x
  2. Step 2: Convert to fraction form
    143,855,999.80/215,783,999.70 = 63,076,967.80/x
  3. Step 3: Cross multiply
    143,855,999.80x = 215,783,999.70 × 63,076,967.80
  4. Step 4: Simplify right side
    143,855,999.80x = 13,611,000,400,832,108
  5. Step 5: Solve for x
    x = 13,611,000,400,832,108/143,855,999.80
  6. Step 6: Final answer
    x = 94,615,451.70

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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.