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Finding the Fourth Proportional to 39,758,978.60, 59,638,467.90 and 35,224,015.40

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Solution

The fourth proportional to 39,758,978.60, 59,638,467.90 and 35,224,015.40 is: 52,836,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,758,978.60 : 59,638,467.90 = 35,224,015.40 : x
  2. Step 2: Convert to fraction form
    39,758,978.60/59,638,467.90 = 35,224,015.40/x
  3. Step 3: Cross multiply
    39,758,978.60x = 59,638,467.90 × 35,224,015.40
  4. Step 4: Simplify right side
    39,758,978.60x = 2,100,706,311,742,005.50
  5. Step 5: Solve for x
    x = 2,100,706,311,742,005.50/39,758,978.60
  6. Step 6: Final answer
    x = 52,836,023.10

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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.