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Finding the Fourth Proportional to 93,424.88, 128,741.48 and 66,492

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Solution

The fourth proportional to 93,424.88, 128,741.48 and 66,492 is: 91,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,424.88 : 128,741.48 = 66,492 : x
  2. Step 2: Convert to fraction form
    93,424.88/128,741.48 = 66,492/x
  3. Step 3: Cross multiply
    93,424.88x = 128,741.48 × 66,492
  4. Step 4: Simplify right side
    93,424.88x = 8,560,278,488.16
  5. Step 5: Solve for x
    x = 8,560,278,488.16/93,424.88
  6. Step 6: Final answer
    x = 91,627.40

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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.