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Finding the Fourth Proportional to 113,038.86, 155,985.06 and 62,043.49

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Solution

The fourth proportional to 113,038.86, 155,985.06 and 62,043.49 is: 85,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,038.86 : 155,985.06 = 62,043.49 : x
  2. Step 2: Convert to fraction form
    113,038.86/155,985.06 = 62,043.49/x
  3. Step 3: Cross multiply
    113,038.86x = 155,985.06 × 62,043.49
  4. Step 4: Simplify right side
    113,038.86x = 9,677,857,510.26
  5. Step 5: Solve for x
    x = 9,677,857,510.26/113,038.86
  6. Step 6: Final answer
    x = 85,615.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.