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Finding the Fourth Proportional to 85,954,818.80, 128,932,228.20 and 58,745,039.60

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Solution

The fourth proportional to 85,954,818.80, 128,932,228.20 and 58,745,039.60 is: 88,117,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954,818.80 : 128,932,228.20 = 58,745,039.60 : x
  2. Step 2: Convert to fraction form
    85,954,818.80/128,932,228.20 = 58,745,039.60/x
  3. Step 3: Cross multiply
    85,954,818.80x = 128,932,228.20 × 58,745,039.60
  4. Step 4: Simplify right side
    85,954,818.80x = 7,574,128,851,325,237
  5. Step 5: Solve for x
    x = 7,574,128,851,325,237/85,954,818.80
  6. Step 6: Final answer
    x = 88,117,559.40

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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.