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Finding the Fourth Proportional to 76,468.32, 105,529.76 and 42,476.92

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Solution

The fourth proportional to 76,468.32, 105,529.76 and 42,476.92 is: 58,620.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,468.32 : 105,529.76 = 42,476.92 : x
  2. Step 2: Convert to fraction form
    76,468.32/105,529.76 = 42,476.92/x
  3. Step 3: Cross multiply
    76,468.32x = 105,529.76 × 42,476.92
  4. Step 4: Simplify right side
    76,468.32x = 4,482,579,173.14
  5. Step 5: Solve for x
    x = 4,482,579,173.14/76,468.32
  6. Step 6: Final answer
    x = 58,620.08

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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.