Home / 191,985.81-287,959.28-51,758.61

Finding the Fourth Proportional to 191,985.81, 287,959.28 and 51,758.61

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Solution

The fourth proportional to 191,985.81, 287,959.28 and 51,758.61 is: 77,632.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,985.81 : 287,959.28 = 51,758.61 : x
  2. Step 2: Convert to fraction form
    191,985.81/287,959.28 = 51,758.61/x
  3. Step 3: Cross multiply
    191,985.81x = 287,959.28 × 51,758.61
  4. Step 4: Simplify right side
    191,985.81x = 14,904,371,810.61
  5. Step 5: Solve for x
    x = 14,904,371,810.61/191,985.81
  6. Step 6: Final answer
    x = 77,632.67

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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.