Home / 186,076,643.40-279,114,965.10-76,865,517.90

Finding the Fourth Proportional to 186,076,643.40, 279,114,965.10 and 76,865,517.90

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Solution

The fourth proportional to 186,076,643.40, 279,114,965.10 and 76,865,517.90 is: 115,298,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,076,643.40 : 279,114,965.10 = 76,865,517.90 : x
  2. Step 2: Convert to fraction form
    186,076,643.40/279,114,965.10 = 76,865,517.90/x
  3. Step 3: Cross multiply
    186,076,643.40x = 279,114,965.10 × 76,865,517.90
  4. Step 4: Simplify right side
    186,076,643.40x = 21,454,316,346,051,928
  5. Step 5: Solve for x
    x = 21,454,316,346,051,928/186,076,643.40
  6. Step 6: Final answer
    x = 115,298,276.85

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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.