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Finding the Fourth Proportional to 39,851,978.40, 59,651,996.40 and 28,514,570.40

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Solution

The fourth proportional to 39,851,978.40, 59,651,996.40 and 28,514,570.40 is: 42,681,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,851,978.40 : 59,651,996.40 = 28,514,570.40 : x
  2. Step 2: Convert to fraction form
    39,851,978.40/59,651,996.40 = 28,514,570.40/x
  3. Step 3: Cross multiply
    39,851,978.40x = 59,651,996.40 × 28,514,570.40
  4. Step 4: Simplify right side
    39,851,978.40x = 1,700,951,050,848,346.50
  5. Step 5: Solve for x
    x = 1,700,951,050,848,346.50/39,851,978.40
  6. Step 6: Final answer
    x = 42,681,721.69

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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.