Home / 193,422,015.40-289,881,080.70-78,312,332.20

Finding the Fourth Proportional to 193,422,015.40, 289,881,080.70 and 78,312,332.20

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Solution

The fourth proportional to 193,422,015.40, 289,881,080.70 and 78,312,332.20 is: 117,366,492.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,422,015.40 : 289,881,080.70 = 78,312,332.20 : x
  2. Step 2: Convert to fraction form
    193,422,015.40/289,881,080.70 = 78,312,332.20/x
  3. Step 3: Cross multiply
    193,422,015.40x = 289,881,080.70 × 78,312,332.20
  4. Step 4: Simplify right side
    193,422,015.40x = 22,701,263,490,273,408
  5. Step 5: Solve for x
    x = 22,701,263,490,273,408/193,422,015.40
  6. Step 6: Final answer
    x = 117,366,492.35

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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.