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Finding the Fourth Proportional to 93,307.72, 128,768.10 and 53,028.28

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Solution

The fourth proportional to 93,307.72, 128,768.10 and 53,028.28 is: 73,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,307.72 : 128,768.10 = 53,028.28 : x
  2. Step 2: Convert to fraction form
    93,307.72/128,768.10 = 53,028.28/x
  3. Step 3: Cross multiply
    93,307.72x = 128,768.10 × 53,028.28
  4. Step 4: Simplify right side
    93,307.72x = 6,828,350,861.87
  5. Step 5: Solve for x
    x = 6,828,350,861.87/93,307.72
  6. Step 6: Final answer
    x = 73,180.99

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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.