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Finding the Fourth Proportional to 495,003.90, 742,360.05 and 195,384.90

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Solution

The fourth proportional to 495,003.90, 742,360.05 and 195,384.90 is: 293,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,003.90 : 742,360.05 = 195,384.90 : x
  2. Step 2: Convert to fraction form
    495,003.90/742,360.05 = 195,384.90/x
  3. Step 3: Cross multiply
    495,003.90x = 742,360.05 × 195,384.90
  4. Step 4: Simplify right side
    495,003.90x = 145,045,944,133.25
  5. Step 5: Solve for x
    x = 145,045,944,133.25/495,003.90
  6. Step 6: Final answer
    x = 293,019.80

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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.