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Finding the Fourth Proportional to 58,281.20, 87,421.80 and 30,575.60

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Solution

The fourth proportional to 58,281.20, 87,421.80 and 30,575.60 is: 45,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,281.20 : 87,421.80 = 30,575.60 : x
  2. Step 2: Convert to fraction form
    58,281.20/87,421.80 = 30,575.60/x
  3. Step 3: Cross multiply
    58,281.20x = 87,421.80 × 30,575.60
  4. Step 4: Simplify right side
    58,281.20x = 2,672,973,988.08
  5. Step 5: Solve for x
    x = 2,672,973,988.08/58,281.20
  6. Step 6: Final answer
    x = 45,863.40

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1.5x scale

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.