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Finding the Fourth Proportional to 112,881.79, 155,783.87 and 62,580.79

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Solution

The fourth proportional to 112,881.79, 155,783.87 and 62,580.79 is: 86,365.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,881.79 : 155,783.87 = 62,580.79 : x
  2. Step 2: Convert to fraction form
    112,881.79/155,783.87 = 62,580.79/x
  3. Step 3: Cross multiply
    112,881.79x = 155,783.87 × 62,580.79
  4. Step 4: Simplify right side
    112,881.79x = 9,749,077,653.86
  5. Step 5: Solve for x
    x = 9,749,077,653.86/112,881.79
  6. Step 6: Final answer
    x = 86,365.37

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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.