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Finding the Fourth Proportional to 93,837.40, 129,489.78 and 51,393.40

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Solution

The fourth proportional to 93,837.40, 129,489.78 and 51,393.40 is: 70,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,837.40 : 129,489.78 = 51,393.40 : x
  2. Step 2: Convert to fraction form
    93,837.40/129,489.78 = 51,393.40/x
  3. Step 3: Cross multiply
    93,837.40x = 129,489.78 × 51,393.40
  4. Step 4: Simplify right side
    93,837.40x = 6,654,920,059.45
  5. Step 5: Solve for x
    x = 6,654,920,059.45/93,837.40
  6. Step 6: Final answer
    x = 70,919.70

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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.