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Finding the Fourth Proportional to 93,321.90, 128,787.12 and 53,037.36

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Solution

The fourth proportional to 93,321.90, 128,787.12 and 53,037.36 is: 73,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.90 : 128,787.12 = 53,037.36 : x
  2. Step 2: Convert to fraction form
    93,321.90/128,787.12 = 53,037.36/x
  3. Step 3: Cross multiply
    93,321.90x = 128,787.12 × 53,037.36
  4. Step 4: Simplify right side
    93,321.90x = 6,830,528,846.80
  5. Step 5: Solve for x
    x = 6,830,528,846.80/93,321.90
  6. Step 6: Final answer
    x = 73,193.20

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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.