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Finding the Fourth Proportional to 186,624,368.80, 279,936,553.20 and 65,440,074.40

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Solution

The fourth proportional to 186,624,368.80, 279,936,553.20 and 65,440,074.40 is: 98,160,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,624,368.80 : 279,936,553.20 = 65,440,074.40 : x
  2. Step 2: Convert to fraction form
    186,624,368.80/279,936,553.20 = 65,440,074.40/x
  3. Step 3: Cross multiply
    186,624,368.80x = 279,936,553.20 × 65,440,074.40
  4. Step 4: Simplify right side
    186,624,368.80x = 18,319,068,868,687,556
  5. Step 5: Solve for x
    x = 18,319,068,868,687,556/186,624,368.80
  6. Step 6: Final answer
    x = 98,160,111.60

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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.