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Finding the Fourth Proportional to 77,009.63, 115,251.60 and 64,543.73

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Solution

The fourth proportional to 77,009.63, 115,251.60 and 64,543.73 is: 96,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,009.63 : 115,251.60 = 64,543.73 : x
  2. Step 2: Convert to fraction form
    77,009.63/115,251.60 = 64,543.73/x
  3. Step 3: Cross multiply
    77,009.63x = 115,251.60 × 64,543.73
  4. Step 4: Simplify right side
    77,009.63x = 7,438,768,152.47
  5. Step 5: Solve for x
    x = 7,438,768,152.47/77,009.63
  6. Step 6: Final answer
    x = 96,595.30

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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.