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Finding the Fourth Proportional to 186,937.40, 280,373.70 and 68,547.80

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Solution

The fourth proportional to 186,937.40, 280,373.70 and 68,547.80 is: 102,809.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,937.40 : 280,373.70 = 68,547.80 : x
  2. Step 2: Convert to fraction form
    186,937.40/280,373.70 = 68,547.80/x
  3. Step 3: Cross multiply
    186,937.40x = 280,373.70 × 68,547.80
  4. Step 4: Simplify right side
    186,937.40x = 19,219,000,312.86
  5. Step 5: Solve for x
    x = 19,219,000,312.86/186,937.40
  6. Step 6: Final answer
    x = 102,809.82

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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.