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Finding the Fourth Proportional to 295,696.80, 443,545.20 and 85,341.60

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Solution

The fourth proportional to 295,696.80, 443,545.20 and 85,341.60 is: 128,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,696.80 : 443,545.20 = 85,341.60 : x
  2. Step 2: Convert to fraction form
    295,696.80/443,545.20 = 85,341.60/x
  3. Step 3: Cross multiply
    295,696.80x = 443,545.20 × 85,341.60
  4. Step 4: Simplify right side
    295,696.80x = 37,852,857,040.32
  5. Step 5: Solve for x
    x = 37,852,857,040.32/295,696.80
  6. Step 6: Final answer
    x = 128,012.40

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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.