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Finding the Fourth Proportional to 315,402.01, 473,109.70 and 113,011.30

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Solution

The fourth proportional to 315,402.01, 473,109.70 and 113,011.30 is: 169,519.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,402.01 : 473,109.70 = 113,011.30 : x
  2. Step 2: Convert to fraction form
    315,402.01/473,109.70 = 113,011.30/x
  3. Step 3: Cross multiply
    315,402.01x = 473,109.70 × 113,011.30
  4. Step 4: Simplify right side
    315,402.01x = 53,466,742,239.61
  5. Step 5: Solve for x
    x = 53,466,742,239.61/315,402.01
  6. Step 6: Final answer
    x = 169,519.35

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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.