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Finding the Fourth Proportional to 203,031.80, 304,547.70 and 97,861.40

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Solution

The fourth proportional to 203,031.80, 304,547.70 and 97,861.40 is: 146,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,031.80 : 304,547.70 = 97,861.40 : x
  2. Step 2: Convert to fraction form
    203,031.80/304,547.70 = 97,861.40/x
  3. Step 3: Cross multiply
    203,031.80x = 304,547.70 × 97,861.40
  4. Step 4: Simplify right side
    203,031.80x = 29,803,464,288.78
  5. Step 5: Solve for x
    x = 29,803,464,288.78/203,031.80
  6. Step 6: Final answer
    x = 146,792.10

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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.