Home / 186,076,644.40-279,114,966.60-76,865,518.90

Finding the Fourth Proportional to 186,076,644.40, 279,114,966.60 and 76,865,518.90

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Solution

The fourth proportional to 186,076,644.40, 279,114,966.60 and 76,865,518.90 is: 115,298,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,076,644.40 : 279,114,966.60 = 76,865,518.90 : x
  2. Step 2: Convert to fraction form
    186,076,644.40/279,114,966.60 = 76,865,518.90/x
  3. Step 3: Cross multiply
    186,076,644.40x = 279,114,966.60 × 76,865,518.90
  4. Step 4: Simplify right side
    186,076,644.40x = 21,454,316,740,465,172
  5. Step 5: Solve for x
    x = 21,454,316,740,465,172/186,076,644.40
  6. Step 6: Final answer
    x = 115,298,278.35

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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.