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Finding the Fourth Proportional to 93,312,811.20, 139,969,216.80 and 89,911,588.80

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Solution

The fourth proportional to 93,312,811.20, 139,969,216.80 and 89,911,588.80 is: 134,867,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,811.20 : 139,969,216.80 = 89,911,588.80 : x
  2. Step 2: Convert to fraction form
    93,312,811.20/139,969,216.80 = 89,911,588.80/x
  3. Step 3: Cross multiply
    93,312,811.20x = 139,969,216.80 × 89,911,588.80
  4. Step 4: Simplify right side
    93,312,811.20x = 12,584,854,665,579,652
  5. Step 5: Solve for x
    x = 12,584,854,665,579,652/93,312,811.20
  6. Step 6: Final answer
    x = 134,867,383.20

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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.