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Finding the Fourth Proportional to 355,266.70, 532,705.65 and 144,666.70

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Solution

The fourth proportional to 355,266.70, 532,705.65 and 144,666.70 is: 216,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,266.70 : 532,705.65 = 144,666.70 : x
  2. Step 2: Convert to fraction form
    355,266.70/532,705.65 = 144,666.70/x
  3. Step 3: Cross multiply
    355,266.70x = 532,705.65 × 144,666.70
  4. Step 4: Simplify right side
    355,266.70x = 77,064,768,456.86
  5. Step 5: Solve for x
    x = 77,064,768,456.86/355,266.70
  6. Step 6: Final answer
    x = 216,920.89

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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.