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Finding the Fourth Proportional to 93,310.40, 139,965.60 and 67,066.40

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Solution

The fourth proportional to 93,310.40, 139,965.60 and 67,066.40 is: 100,599.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,310.40 : 139,965.60 = 67,066.40 : x
  2. Step 2: Convert to fraction form
    93,310.40/139,965.60 = 67,066.40/x
  3. Step 3: Cross multiply
    93,310.40x = 139,965.60 × 67,066.40
  4. Step 4: Simplify right side
    93,310.40x = 9,386,988,915.84
  5. Step 5: Solve for x
    x = 9,386,988,915.84/93,310.40
  6. Step 6: Final answer
    x = 100,599.60

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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.