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Finding the Fourth Proportional to 58,484.80, 87,729.90 and 28,526.59

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Solution

The fourth proportional to 58,484.80, 87,729.90 and 28,526.59 is: 42,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,484.80 : 87,729.90 = 28,526.59 : x
  2. Step 2: Convert to fraction form
    58,484.80/87,729.90 = 28,526.59/x
  3. Step 3: Cross multiply
    58,484.80x = 87,729.90 × 28,526.59
  4. Step 4: Simplify right side
    58,484.80x = 2,502,634,888.04
  5. Step 5: Solve for x
    x = 2,502,634,888.04/58,484.80
  6. Step 6: Final answer
    x = 42,791.20

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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.