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Finding the Fourth Proportional to 93,518.74, 128,970.39 and 73,103.50

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Solution

The fourth proportional to 93,518.74, 128,970.39 and 73,103.50 is: 100,816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,518.74 : 128,970.39 = 73,103.50 : x
  2. Step 2: Convert to fraction form
    93,518.74/128,970.39 = 73,103.50/x
  3. Step 3: Cross multiply
    93,518.74x = 128,970.39 × 73,103.50
  4. Step 4: Simplify right side
    93,518.74x = 9,428,186,905.37
  5. Step 5: Solve for x
    x = 9,428,186,905.37/93,518.74
  6. Step 6: Final answer
    x = 100,816.02

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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.