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Finding the Fourth Proportional to 118,887.48, 163,932.93 and 75,798.72

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Solution

The fourth proportional to 118,887.48, 163,932.93 and 75,798.72 is: 104,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,887.48 : 163,932.93 = 75,798.72 : x
  2. Step 2: Convert to fraction form
    118,887.48/163,932.93 = 75,798.72/x
  3. Step 3: Cross multiply
    118,887.48x = 163,932.93 × 75,798.72
  4. Step 4: Simplify right side
    118,887.48x = 12,425,906,259.85
  5. Step 5: Solve for x
    x = 12,425,906,259.85/118,887.48
  6. Step 6: Final answer
    x = 104,518.21

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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.