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Finding the Fourth Proportional to 76,575.62, 105,683.85 and 43,041.62

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Solution

The fourth proportional to 76,575.62, 105,683.85 and 43,041.62 is: 59,402.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,575.62 : 105,683.85 = 43,041.62 : x
  2. Step 2: Convert to fraction form
    76,575.62/105,683.85 = 43,041.62/x
  3. Step 3: Cross multiply
    76,575.62x = 105,683.85 × 43,041.62
  4. Step 4: Simplify right side
    76,575.62x = 4,548,804,111.84
  5. Step 5: Solve for x
    x = 4,548,804,111.84/76,575.62
  6. Step 6: Final answer
    x = 59,402.77

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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.