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Finding the Fourth Proportional to 42,374.70, 63,572.75 and 19,567.56

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Solution

The fourth proportional to 42,374.70, 63,572.75 and 19,567.56 is: 29,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,374.70 : 63,572.75 = 19,567.56 : x
  2. Step 2: Convert to fraction form
    42,374.70/63,572.75 = 19,567.56/x
  3. Step 3: Cross multiply
    42,374.70x = 63,572.75 × 19,567.56
  4. Step 4: Simplify right side
    42,374.70x = 1,243,963,502.15
  5. Step 5: Solve for x
    x = 1,243,963,502.15/42,374.70
  6. Step 6: Final answer
    x = 29,356.28

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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.