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Finding the Fourth Proportional to 93,731.68, 129,349.80 and 51,290.22

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Solution

The fourth proportional to 93,731.68, 129,349.80 and 51,290.22 is: 70,780.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,731.68 : 129,349.80 = 51,290.22 : x
  2. Step 2: Convert to fraction form
    93,731.68/129,349.80 = 51,290.22/x
  3. Step 3: Cross multiply
    93,731.68x = 129,349.80 × 51,290.22
  4. Step 4: Simplify right side
    93,731.68x = 6,634,379,698.96
  5. Step 5: Solve for x
    x = 6,634,379,698.96/93,731.68
  6. Step 6: Final answer
    x = 70,780.55

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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.