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Finding the Fourth Proportional to 72,963.85, 100,681.54 and 41,130.85

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Solution

The fourth proportional to 72,963.85, 100,681.54 and 41,130.85 is: 56,755.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,963.85 : 100,681.54 = 41,130.85 : x
  2. Step 2: Convert to fraction form
    72,963.85/100,681.54 = 41,130.85/x
  3. Step 3: Cross multiply
    72,963.85x = 100,681.54 × 41,130.85
  4. Step 4: Simplify right side
    72,963.85x = 4,141,117,319.51
  5. Step 5: Solve for x
    x = 4,141,117,319.51/72,963.85
  6. Step 6: Final answer
    x = 56,755.74

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1.5x scale

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.