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Finding the Fourth Proportional to 496,988.61, 745,482.79 and 142,002.63

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Solution

The fourth proportional to 496,988.61, 745,482.79 and 142,002.63 is: 213,003.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,988.61 : 745,482.79 = 142,002.63 : x
  2. Step 2: Convert to fraction form
    496,988.61/745,482.79 = 142,002.63/x
  3. Step 3: Cross multiply
    496,988.61x = 745,482.79 × 142,002.63
  4. Step 4: Simplify right side
    496,988.61x = 105,860,516,799.74
  5. Step 5: Solve for x
    x = 105,860,516,799.74/496,988.61
  6. Step 6: Final answer
    x = 213,003.91

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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.