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Finding the Fourth Proportional to 426,071.80, 587,981.10 and 235,085.19

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Solution

The fourth proportional to 426,071.80, 587,981.10 and 235,085.19 is: 324,418.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,071.80 : 587,981.10 = 235,085.19 : x
  2. Step 2: Convert to fraction form
    426,071.80/587,981.10 = 235,085.19/x
  3. Step 3: Cross multiply
    426,071.80x = 587,981.10 × 235,085.19
  4. Step 4: Simplify right side
    426,071.80x = 138,225,646,625.37
  5. Step 5: Solve for x
    x = 138,225,646,625.37/426,071.80
  6. Step 6: Final answer
    x = 324,418.67

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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.