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Finding the Fourth Proportional to 93,159.99, 128,563.10 and 50,720.85

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Solution

The fourth proportional to 93,159.99, 128,563.10 and 50,720.85 is: 69,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,159.99 : 128,563.10 = 50,720.85 : x
  2. Step 2: Convert to fraction form
    93,159.99/128,563.10 = 50,720.85/x
  3. Step 3: Cross multiply
    93,159.99x = 128,563.10 × 50,720.85
  4. Step 4: Simplify right side
    93,159.99x = 6,520,829,457.03
  5. Step 5: Solve for x
    x = 6,520,829,457.03/93,159.99
  6. Step 6: Final answer
    x = 69,996.03

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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.