Home / 28,712,077.80-42,984,135.90-19,138,266.60

Finding the Fourth Proportional to 28,712,077.80, 42,984,135.90 and 19,138,266.60

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Solution

The fourth proportional to 28,712,077.80, 42,984,135.90 and 19,138,266.60 is: 28,651,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712,077.80 : 42,984,135.90 = 19,138,266.60 : x
  2. Step 2: Convert to fraction form
    28,712,077.80/42,984,135.90 = 19,138,266.60/x
  3. Step 3: Cross multiply
    28,712,077.80x = 42,984,135.90 × 19,138,266.60
  4. Step 4: Simplify right side
    28,712,077.80x = 822,641,852,424,831
  5. Step 5: Solve for x
    x = 822,641,852,424,831/28,712,077.80
  6. Step 6: Final answer
    x = 28,651,421.82

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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.