Home / 208,050,156.20-287,000,362.66-128,639,832.64

Finding the Fourth Proportional to 208,050,156.20, 287,000,362.66 and 128,639,832.64

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Solution

The fourth proportional to 208,050,156.20, 287,000,362.66 and 128,639,832.64 is: 177,455,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,050,156.20 : 287,000,362.66 = 128,639,832.64 : x
  2. Step 2: Convert to fraction form
    208,050,156.20/287,000,362.66 = 128,639,832.64/x
  3. Step 3: Cross multiply
    208,050,156.20x = 287,000,362.66 × 128,639,832.64
  4. Step 4: Simplify right side
    208,050,156.20x = 36,919,678,620,201,712
  5. Step 5: Solve for x
    x = 36,919,678,620,201,712/208,050,156.20
  6. Step 6: Final answer
    x = 177,455,664.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.