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Finding the Fourth Proportional to 58,303.81, 87,458.45 and 18,864.01

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Solution

The fourth proportional to 58,303.81, 87,458.45 and 18,864.01 is: 28,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,303.81 : 87,458.45 = 18,864.01 : x
  2. Step 2: Convert to fraction form
    58,303.81/87,458.45 = 18,864.01/x
  3. Step 3: Cross multiply
    58,303.81x = 87,458.45 × 18,864.01
  4. Step 4: Simplify right side
    58,303.81x = 1,649,816,762.42
  5. Step 5: Solve for x
    x = 1,649,816,762.42/58,303.81
  6. Step 6: Final answer
    x = 28,296.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.