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Finding the Fourth Proportional to 163,905.90, 245,421.45 and 163,905.90

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Solution

The fourth proportional to 163,905.90, 245,421.45 and 163,905.90 is: 245,421.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,905.90 : 245,421.45 = 163,905.90 : x
  2. Step 2: Convert to fraction form
    163,905.90/245,421.45 = 163,905.90/x
  3. Step 3: Cross multiply
    163,905.90x = 245,421.45 × 163,905.90
  4. Step 4: Simplify right side
    163,905.90x = 40,226,023,641.56
  5. Step 5: Solve for x
    x = 40,226,023,641.56/163,905.90
  6. Step 6: Final answer
    x = 245,421.45

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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.