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Finding the Fourth Proportional to 112,620.68, 155,410.10 and 62,316.68

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Solution

The fourth proportional to 112,620.68, 155,410.10 and 62,316.68 is: 85,993.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,620.68 : 155,410.10 = 62,316.68 : x
  2. Step 2: Convert to fraction form
    112,620.68/155,410.10 = 62,316.68/x
  3. Step 3: Cross multiply
    112,620.68x = 155,410.10 × 62,316.68
  4. Step 4: Simplify right side
    112,620.68x = 9,684,641,470.47
  5. Step 5: Solve for x
    x = 9,684,641,470.47/112,620.68
  6. Step 6: Final answer
    x = 85,993.46

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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.