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Finding the Fourth Proportional to 25,643.72, 38,483.65 and 9,005.05

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Solution

The fourth proportional to 25,643.72, 38,483.65 and 9,005.05 is: 13,513.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,643.72 : 38,483.65 = 9,005.05 : x
  2. Step 2: Convert to fraction form
    25,643.72/38,483.65 = 9,005.05/x
  3. Step 3: Cross multiply
    25,643.72x = 38,483.65 × 9,005.05
  4. Step 4: Simplify right side
    25,643.72x = 346,547,137.23
  5. Step 5: Solve for x
    x = 346,547,137.23/25,643.72
  6. Step 6: Final answer
    x = 13,513.92

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1.5x scale

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.