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Finding the Fourth Proportional to 76,643.55, 114,801.30 and 63,521.55

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Solution

The fourth proportional to 76,643.55, 114,801.30 and 63,521.55 is: 95,146.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,643.55 : 114,801.30 = 63,521.55 : x
  2. Step 2: Convert to fraction form
    76,643.55/114,801.30 = 63,521.55/x
  3. Step 3: Cross multiply
    76,643.55x = 114,801.30 × 63,521.55
  4. Step 4: Simplify right side
    76,643.55x = 7,292,356,518.02
  5. Step 5: Solve for x
    x = 7,292,356,518.02/76,643.55
  6. Step 6: Final answer
    x = 95,146.38

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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.