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Finding the Fourth Proportional to 118,562.40, 177,646.14 and 83,428.23

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Solution

The fourth proportional to 118,562.40, 177,646.14 and 83,428.23 is: 125,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,562.40 : 177,646.14 = 83,428.23 : x
  2. Step 2: Convert to fraction form
    118,562.40/177,646.14 = 83,428.23/x
  3. Step 3: Cross multiply
    118,562.40x = 177,646.14 × 83,428.23
  4. Step 4: Simplify right side
    118,562.40x = 14,820,703,026.53
  5. Step 5: Solve for x
    x = 14,820,703,026.53/118,562.40
  6. Step 6: Final answer
    x = 125,003.40

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1.5x scale

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.