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Finding the Fourth Proportional to 85,300.40, 127,950.60 and 37,915.40

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Solution

The fourth proportional to 85,300.40, 127,950.60 and 37,915.40 is: 56,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,300.40 : 127,950.60 = 37,915.40 : x
  2. Step 2: Convert to fraction form
    85,300.40/127,950.60 = 37,915.40/x
  3. Step 3: Cross multiply
    85,300.40x = 127,950.60 × 37,915.40
  4. Step 4: Simplify right side
    85,300.40x = 4,851,298,179.24
  5. Step 5: Solve for x
    x = 4,851,298,179.24/85,300.40
  6. Step 6: Final answer
    x = 56,873.10

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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.