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Finding the Fourth Proportional to 98,777.91, 136,313.50 and 53,455.89

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Solution

The fourth proportional to 98,777.91, 136,313.50 and 53,455.89 is: 73,769.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,777.91 : 136,313.50 = 53,455.89 : x
  2. Step 2: Convert to fraction form
    98,777.91/136,313.50 = 53,455.89/x
  3. Step 3: Cross multiply
    98,777.91x = 136,313.50 × 53,455.89
  4. Step 4: Simplify right side
    98,777.91x = 7,286,759,461.52
  5. Step 5: Solve for x
    x = 7,286,759,461.52/98,777.91
  6. Step 6: Final answer
    x = 73,769.12

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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.