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Finding the Fourth Proportional to 14,087.55, 19,442.93 and 8,784.08

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Solution

The fourth proportional to 14,087.55, 19,442.93 and 8,784.08 is: 12,123.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,087.55 : 19,442.93 = 8,784.08 : x
  2. Step 2: Convert to fraction form
    14,087.55/19,442.93 = 8,784.08/x
  3. Step 3: Cross multiply
    14,087.55x = 19,442.93 × 8,784.08
  4. Step 4: Simplify right side
    14,087.55x = 170,788,111.42
  5. Step 5: Solve for x
    x = 170,788,111.42/14,087.55
  6. Step 6: Final answer
    x = 12,123.34

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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.