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Finding the Fourth Proportional to 535,615.68, 803,428.06 and 136,256.80

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Solution

The fourth proportional to 535,615.68, 803,428.06 and 136,256.80 is: 204,386.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,615.68 : 803,428.06 = 136,256.80 : x
  2. Step 2: Convert to fraction form
    535,615.68/803,428.06 = 136,256.80/x
  3. Step 3: Cross multiply
    535,615.68x = 803,428.06 × 136,256.80
  4. Step 4: Simplify right side
    535,615.68x = 109,472,536,485.81
  5. Step 5: Solve for x
    x = 109,472,536,485.81/535,615.68
  6. Step 6: Final answer
    x = 204,386.35

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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.