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Finding the Fourth Proportional to 419,330.76, 578,586.18 and 249,531.72

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Solution

The fourth proportional to 419,330.76, 578,586.18 and 249,531.72 is: 344,300.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,330.76 : 578,586.18 = 249,531.72 : x
  2. Step 2: Convert to fraction form
    419,330.76/578,586.18 = 249,531.72/x
  3. Step 3: Cross multiply
    419,330.76x = 578,586.18 × 249,531.72
  4. Step 4: Simplify right side
    419,330.76x = 144,375,604,663.63
  5. Step 5: Solve for x
    x = 144,375,604,663.63/419,330.76
  6. Step 6: Final answer
    x = 344,300.06

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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.