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Finding the Fourth Proportional to 52,486.74, 72,430.80 and 28,611.96

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Solution

The fourth proportional to 52,486.74, 72,430.80 and 28,611.96 is: 39,484.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,486.74 : 72,430.80 = 28,611.96 : x
  2. Step 2: Convert to fraction form
    52,486.74/72,430.80 = 28,611.96/x
  3. Step 3: Cross multiply
    52,486.74x = 72,430.80 × 28,611.96
  4. Step 4: Simplify right side
    52,486.74x = 2,072,387,152.37
  5. Step 5: Solve for x
    x = 2,072,387,152.37/52,486.74
  6. Step 6: Final answer
    x = 39,484.01

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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.