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Finding the Fourth Proportional to 166,041.20, 249,061.80 and 136,492.40

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Solution

The fourth proportional to 166,041.20, 249,061.80 and 136,492.40 is: 204,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,041.20 : 249,061.80 = 136,492.40 : x
  2. Step 2: Convert to fraction form
    166,041.20/249,061.80 = 136,492.40/x
  3. Step 3: Cross multiply
    166,041.20x = 249,061.80 × 136,492.40
  4. Step 4: Simplify right side
    166,041.20x = 33,995,042,830.32
  5. Step 5: Solve for x
    x = 33,995,042,830.32/166,041.20
  6. Step 6: Final answer
    x = 204,738.60

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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.