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Finding the Fourth Proportional to 93,450.51, 128,961.18 and 51,008.94

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Solution

The fourth proportional to 93,450.51, 128,961.18 and 51,008.94 is: 70,392.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,450.51 : 128,961.18 = 51,008.94 : x
  2. Step 2: Convert to fraction form
    93,450.51/128,961.18 = 51,008.94/x
  3. Step 3: Cross multiply
    93,450.51x = 128,961.18 × 51,008.94
  4. Step 4: Simplify right side
    93,450.51x = 6,578,173,092.95
  5. Step 5: Solve for x
    x = 6,578,173,092.95/93,450.51
  6. Step 6: Final answer
    x = 70,392.05

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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.