Home / 191,874,124.80-287,727,206.40-76,820,428.80

Finding the Fourth Proportional to 191,874,124.80, 287,727,206.40 and 76,820,428.80

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Solution

The fourth proportional to 191,874,124.80, 287,727,206.40 and 76,820,428.80 is: 115,197,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,874,124.80 : 287,727,206.40 = 76,820,428.80 : x
  2. Step 2: Convert to fraction form
    191,874,124.80/287,727,206.40 = 76,820,428.80/x
  3. Step 3: Cross multiply
    191,874,124.80x = 287,727,206.40 × 76,820,428.80
  4. Step 4: Simplify right side
    191,874,124.80x = 22,103,327,373,074,100
  5. Step 5: Solve for x
    x = 22,103,327,373,074,100/191,874,124.80
  6. Step 6: Final answer
    x = 115,197,019.90

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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.