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Finding the Fourth Proportional to 295,638.40, 443,457.60 and 85,283.20

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Solution

The fourth proportional to 295,638.40, 443,457.60 and 85,283.20 is: 127,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,638.40 : 443,457.60 = 85,283.20 : x
  2. Step 2: Convert to fraction form
    295,638.40/443,457.60 = 85,283.20/x
  3. Step 3: Cross multiply
    295,638.40x = 443,457.60 × 85,283.20
  4. Step 4: Simplify right side
    295,638.40x = 37,819,483,192.32
  5. Step 5: Solve for x
    x = 37,819,483,192.32/295,638.40
  6. Step 6: Final answer
    x = 127,924.80

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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.