Home / 186,624,766.40-279,937,149.60-128,174,129.60

Finding the Fourth Proportional to 186,624,766.40, 279,937,149.60 and 128,174,129.60

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Solution

The fourth proportional to 186,624,766.40, 279,937,149.60 and 128,174,129.60 is: 192,261,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,624,766.40 : 279,937,149.60 = 128,174,129.60 : x
  2. Step 2: Convert to fraction form
    186,624,766.40/279,937,149.60 = 128,174,129.60/x
  3. Step 3: Cross multiply
    186,624,766.40x = 279,937,149.60 × 128,174,129.60
  4. Step 4: Simplify right side
    186,624,766.40x = 35,880,700,492,684,988
  5. Step 5: Solve for x
    x = 35,880,700,492,684,988/186,624,766.40
  6. Step 6: Final answer
    x = 192,261,194.40

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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.