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Finding the Fourth Proportional to 112,765.74, 169,127.44 and 56,590.78

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Solution

The fourth proportional to 112,765.74, 169,127.44 and 56,590.78 is: 84,875.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,765.74 : 169,127.44 = 56,590.78 : x
  2. Step 2: Convert to fraction form
    112,765.74/169,127.44 = 56,590.78/x
  3. Step 3: Cross multiply
    112,765.74x = 169,127.44 × 56,590.78
  4. Step 4: Simplify right side
    112,765.74x = 9,571,053,749.00
  5. Step 5: Solve for x
    x = 9,571,053,749.00/112,765.74
  6. Step 6: Final answer
    x = 84,875.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.