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Finding the Fourth Proportional to 39,619,938.40, 59,429,907.60 and 39,619,938.40

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Solution

The fourth proportional to 39,619,938.40, 59,429,907.60 and 39,619,938.40 is: 59,429,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,619,938.40 : 59,429,907.60 = 39,619,938.40 : x
  2. Step 2: Convert to fraction form
    39,619,938.40/59,429,907.60 = 39,619,938.40/x
  3. Step 3: Cross multiply
    39,619,938.40x = 59,429,907.60 × 39,619,938.40
  4. Step 4: Simplify right side
    39,619,938.40x = 2,354,609,278,229,692
  5. Step 5: Solve for x
    x = 2,354,609,278,229,692/39,619,938.40
  6. Step 6: Final answer
    x = 59,429,907.60

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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.