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Finding the Fourth Proportional to 93,113.18, 128,625.76 and 89,656.64

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Solution

The fourth proportional to 93,113.18, 128,625.76 and 89,656.64 is: 123,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,113.18 : 128,625.76 = 89,656.64 : x
  2. Step 2: Convert to fraction form
    93,113.18/128,625.76 = 89,656.64/x
  3. Step 3: Cross multiply
    93,113.18x = 128,625.76 × 89,656.64
  4. Step 4: Simplify right side
    93,113.18x = 11,532,153,459.05
  5. Step 5: Solve for x
    x = 11,532,153,459.05/93,113.18
  6. Step 6: Final answer
    x = 123,850.92

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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.