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Finding the Fourth Proportional to 358,654.32, 537,981.36 and 118,703.76

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Solution

The fourth proportional to 358,654.32, 537,981.36 and 118,703.76 is: 178,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,654.32 : 537,981.36 = 118,703.76 : x
  2. Step 2: Convert to fraction form
    358,654.32/537,981.36 = 118,703.76/x
  3. Step 3: Cross multiply
    358,654.32x = 537,981.36 × 118,703.76
  4. Step 4: Simplify right side
    358,654.32x = 63,860,410,241.91
  5. Step 5: Solve for x
    x = 63,860,410,241.91/358,654.32
  6. Step 6: Final answer
    x = 178,055.60

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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.