Home / 85,540,384.80-128,310,577.20-47,276,632.80

Finding the Fourth Proportional to 85,540,384.80, 128,310,577.20 and 47,276,632.80

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Solution

The fourth proportional to 85,540,384.80, 128,310,577.20 and 47,276,632.80 is: 70,914,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,540,384.80 : 128,310,577.20 = 47,276,632.80 : x
  2. Step 2: Convert to fraction form
    85,540,384.80/128,310,577.20 = 47,276,632.80/x
  3. Step 3: Cross multiply
    85,540,384.80x = 128,310,577.20 × 47,276,632.80
  4. Step 4: Simplify right side
    85,540,384.80x = 6,066,092,042,640,452
  5. Step 5: Solve for x
    x = 6,066,092,042,640,452/85,540,384.80
  6. Step 6: Final answer
    x = 70,914,949.20

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Double scale
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Similar ratio
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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.