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Finding the Fourth Proportional to 70,585.86, 105,779.25 and 39,010.14

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Solution

The fourth proportional to 70,585.86, 105,779.25 and 39,010.14 is: 58,460.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,585.86 : 105,779.25 = 39,010.14 : x
  2. Step 2: Convert to fraction form
    70,585.86/105,779.25 = 39,010.14/x
  3. Step 3: Cross multiply
    70,585.86x = 105,779.25 × 39,010.14
  4. Step 4: Simplify right side
    70,585.86x = 4,126,463,351.60
  5. Step 5: Solve for x
    x = 4,126,463,351.60/70,585.86
  6. Step 6: Final answer
    x = 58,460.20

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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.