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Finding the Fourth Proportional to 93,300.99, 128,750.71 and 53,009.43

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Solution

The fourth proportional to 93,300.99, 128,750.71 and 53,009.43 is: 73,150.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,300.99 : 128,750.71 = 53,009.43 : x
  2. Step 2: Convert to fraction form
    93,300.99/128,750.71 = 53,009.43/x
  3. Step 3: Cross multiply
    93,300.99x = 128,750.71 × 53,009.43
  4. Step 4: Simplify right side
    93,300.99x = 6,825,001,749.20
  5. Step 5: Solve for x
    x = 6,825,001,749.20/93,300.99
  6. Step 6: Final answer
    x = 73,150.37

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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.