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Finding the Fourth Proportional to 554,428.40, 832,031.40 and 355,233.20

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Solution

The fourth proportional to 554,428.40, 832,031.40 and 355,233.20 is: 533,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,428.40 : 832,031.40 = 355,233.20 : x
  2. Step 2: Convert to fraction form
    554,428.40/832,031.40 = 355,233.20/x
  3. Step 3: Cross multiply
    554,428.40x = 832,031.40 × 355,233.20
  4. Step 4: Simplify right side
    554,428.40x = 295,565,176,722.48
  5. Step 5: Solve for x
    x = 295,565,176,722.48/554,428.40
  6. Step 6: Final answer
    x = 533,098.91

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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.