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Finding the Fourth Proportional to 93,320.88, 128,784.60 and 50,881.20

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Solution

The fourth proportional to 93,320.88, 128,784.60 and 50,881.20 is: 70,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,320.88 : 128,784.60 = 50,881.20 : x
  2. Step 2: Convert to fraction form
    93,320.88/128,784.60 = 50,881.20/x
  3. Step 3: Cross multiply
    93,320.88x = 128,784.60 × 50,881.20
  4. Step 4: Simplify right side
    93,320.88x = 6,552,714,989.52
  5. Step 5: Solve for x
    x = 6,552,714,989.52/93,320.88
  6. Step 6: Final answer
    x = 70,217.03

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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.