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Finding the Fourth Proportional to 70,624.52, 97,421.12 and 42,313.80

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Solution

The fourth proportional to 70,624.52, 97,421.12 and 42,313.80 is: 58,368.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,624.52 : 97,421.12 = 42,313.80 : x
  2. Step 2: Convert to fraction form
    70,624.52/97,421.12 = 42,313.80/x
  3. Step 3: Cross multiply
    70,624.52x = 97,421.12 × 42,313.80
  4. Step 4: Simplify right side
    70,624.52x = 4,122,257,575.89
  5. Step 5: Solve for x
    x = 4,122,257,575.89/70,624.52
  6. Step 6: Final answer
    x = 58,368.65

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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.