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Finding the Fourth Proportional to 93,393.60, 128,878.12 and 53,101.80

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Solution

The fourth proportional to 93,393.60, 128,878.12 and 53,101.80 is: 73,277.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,393.60 : 128,878.12 = 53,101.80 : x
  2. Step 2: Convert to fraction form
    93,393.60/128,878.12 = 53,101.80/x
  3. Step 3: Cross multiply
    93,393.60x = 128,878.12 × 53,101.80
  4. Step 4: Simplify right side
    93,393.60x = 6,843,660,152.62
  5. Step 5: Solve for x
    x = 6,843,660,152.62/93,393.60
  6. Step 6: Final answer
    x = 73,277.61

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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.