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Finding the Fourth Proportional to 9,779.51, 13,492.18 and 6,424.14

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Solution

The fourth proportional to 9,779.51, 13,492.18 and 6,424.14 is: 8,862.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.51 : 13,492.18 = 6,424.14 : x
  2. Step 2: Convert to fraction form
    9,779.51/13,492.18 = 6,424.14/x
  3. Step 3: Cross multiply
    9,779.51x = 13,492.18 × 6,424.14
  4. Step 4: Simplify right side
    9,779.51x = 86,675,653.23
  5. Step 5: Solve for x
    x = 86,675,653.23/9,779.51
  6. Step 6: Final answer
    x = 8,862.99

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1.5x scale

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.