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Finding the Fourth Proportional to 60,779.76, 90,929.88 and 46,031.28

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Solution

The fourth proportional to 60,779.76, 90,929.88 and 46,031.28 is: 68,865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,779.76 : 90,929.88 = 46,031.28 : x
  2. Step 2: Convert to fraction form
    60,779.76/90,929.88 = 46,031.28/x
  3. Step 3: Cross multiply
    60,779.76x = 90,929.88 × 46,031.28
  4. Step 4: Simplify right side
    60,779.76x = 4,185,618,766.65
  5. Step 5: Solve for x
    x = 4,185,618,766.65/60,779.76
  6. Step 6: Final answer
    x = 68,865.34

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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.