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Finding the Fourth Proportional to 527,135.51, 790,696.28 and 127,779.80

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Solution

The fourth proportional to 527,135.51, 790,696.28 and 127,779.80 is: 191,668.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,135.51 : 790,696.28 = 127,779.80 : x
  2. Step 2: Convert to fraction form
    527,135.51/790,696.28 = 127,779.80/x
  3. Step 3: Cross multiply
    527,135.51x = 790,696.28 × 127,779.80
  4. Step 4: Simplify right side
    527,135.51x = 101,035,008,885.11
  5. Step 5: Solve for x
    x = 101,035,008,885.11/527,135.51
  6. Step 6: Final answer
    x = 191,668.00

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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.