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Finding the Fourth Proportional to 112,700.25, 155,531.21 and 62,399.25

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Solution

The fourth proportional to 112,700.25, 155,531.21 and 62,399.25 is: 86,113.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,700.25 : 155,531.21 = 62,399.25 : x
  2. Step 2: Convert to fraction form
    112,700.25/155,531.21 = 62,399.25/x
  3. Step 3: Cross multiply
    112,700.25x = 155,531.21 × 62,399.25
  4. Step 4: Simplify right side
    112,700.25x = 9,705,030,543.60
  5. Step 5: Solve for x
    x = 9,705,030,543.60/112,700.25
  6. Step 6: Final answer
    x = 86,113.66

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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.