Home / 85,190,428.40-127,785,642.60-27,688,512.20

Finding the Fourth Proportional to 85,190,428.40, 127,785,642.60 and 27,688,512.20

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Solution

The fourth proportional to 85,190,428.40, 127,785,642.60 and 27,688,512.20 is: 41,532,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,190,428.40 : 127,785,642.60 = 27,688,512.20 : x
  2. Step 2: Convert to fraction form
    85,190,428.40/127,785,642.60 = 27,688,512.20/x
  3. Step 3: Cross multiply
    85,190,428.40x = 127,785,642.60 × 27,688,512.20
  4. Step 4: Simplify right side
    85,190,428.40x = 3,538,194,324,114,939.50
  5. Step 5: Solve for x
    x = 3,538,194,324,114,939.50/85,190,428.40
  6. Step 6: Final answer
    x = 41,532,768.30

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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.