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Finding the Fourth Proportional to 42,402.40, 63,506.40 and 41,430.40

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Solution

The fourth proportional to 42,402.40, 63,506.40 and 41,430.40 is: 62,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,402.40 : 63,506.40 = 41,430.40 : x
  2. Step 2: Convert to fraction form
    42,402.40/63,506.40 = 41,430.40/x
  3. Step 3: Cross multiply
    42,402.40x = 63,506.40 × 41,430.40
  4. Step 4: Simplify right side
    42,402.40x = 2,631,095,554.56
  5. Step 5: Solve for x
    x = 2,631,095,554.56/42,402.40
  6. Step 6: Final answer
    x = 62,050.63

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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.