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Finding the Fourth Proportional to 93,217.80, 128,590.02 and 55,484.76

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Solution

The fourth proportional to 93,217.80, 128,590.02 and 55,484.76 is: 76,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,217.80 : 128,590.02 = 55,484.76 : x
  2. Step 2: Convert to fraction form
    93,217.80/128,590.02 = 55,484.76/x
  3. Step 3: Cross multiply
    93,217.80x = 128,590.02 × 55,484.76
  4. Step 4: Simplify right side
    93,217.80x = 7,134,786,398.10
  5. Step 5: Solve for x
    x = 7,134,786,398.10/93,217.80
  6. Step 6: Final answer
    x = 76,538.88

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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.