Home / 85,209,612.60-127,814,418.90-39,775,999.80

Finding the Fourth Proportional to 85,209,612.60, 127,814,418.90 and 39,775,999.80

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Solution

The fourth proportional to 85,209,612.60, 127,814,418.90 and 39,775,999.80 is: 59,663,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209,612.60 : 127,814,418.90 = 39,775,999.80 : x
  2. Step 2: Convert to fraction form
    85,209,612.60/127,814,418.90 = 39,775,999.80/x
  3. Step 3: Cross multiply
    85,209,612.60x = 127,814,418.90 × 39,775,999.80
  4. Step 4: Simplify right side
    85,209,612.60x = 5,083,946,300,603,516
  5. Step 5: Solve for x
    x = 5,083,946,300,603,516/85,209,612.60
  6. Step 6: Final answer
    x = 59,663,999.70

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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.