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Finding the Fourth Proportional to 93,144.40, 128,531.95 and 52,858.17

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Solution

The fourth proportional to 93,144.40, 128,531.95 and 52,858.17 is: 72,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,144.40 : 128,531.95 = 52,858.17 : x
  2. Step 2: Convert to fraction form
    93,144.40/128,531.95 = 52,858.17/x
  3. Step 3: Cross multiply
    93,144.40x = 128,531.95 × 52,858.17
  4. Step 4: Simplify right side
    93,144.40x = 6,793,962,888.73
  5. Step 5: Solve for x
    x = 6,793,962,888.73/93,144.40
  6. Step 6: Final answer
    x = 72,940.11

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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.