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Finding the Fourth Proportional to 51,160.40, 70,597.70 and 28,189.20

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Solution

The fourth proportional to 51,160.40, 70,597.70 and 28,189.20 is: 38,899.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,160.40 : 70,597.70 = 28,189.20 : x
  2. Step 2: Convert to fraction form
    51,160.40/70,597.70 = 28,189.20/x
  3. Step 3: Cross multiply
    51,160.40x = 70,597.70 × 28,189.20
  4. Step 4: Simplify right side
    51,160.40x = 1,990,092,543.89
  5. Step 5: Solve for x
    x = 1,990,092,543.89/51,160.40
  6. Step 6: Final answer
    x = 38,899.08

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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.