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Finding the Fourth Proportional to 84,415.34, 116,485.34 and 46,688.78

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Solution

The fourth proportional to 84,415.34, 116,485.34 and 46,688.78 is: 64,426.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,415.34 : 116,485.34 = 46,688.78 : x
  2. Step 2: Convert to fraction form
    84,415.34/116,485.34 = 46,688.78/x
  3. Step 3: Cross multiply
    84,415.34x = 116,485.34 × 46,688.78
  4. Step 4: Simplify right side
    84,415.34x = 5,438,558,412.49
  5. Step 5: Solve for x
    x = 5,438,558,412.49/84,415.34
  6. Step 6: Final answer
    x = 64,426.19

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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.