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Finding the Fourth Proportional to 93,312,839.20, 139,969,258.80 and 89,911,616.80

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Solution

The fourth proportional to 93,312,839.20, 139,969,258.80 and 89,911,616.80 is: 134,867,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,839.20 : 139,969,258.80 = 89,911,616.80 : x
  2. Step 2: Convert to fraction form
    93,312,839.20/139,969,258.80 = 89,911,616.80/x
  3. Step 3: Cross multiply
    93,312,839.20x = 139,969,258.80 × 89,911,616.80
  4. Step 4: Simplify right side
    93,312,839.20x = 12,584,862,361,005,628
  5. Step 5: Solve for x
    x = 12,584,862,361,005,628/93,312,839.20
  6. Step 6: Final answer
    x = 134,867,425.20

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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.