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Finding the Fourth Proportional to 15,802.52, 21,788.70 and 10,488.92

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Solution

The fourth proportional to 15,802.52, 21,788.70 and 10,488.92 is: 14,462.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,802.52 : 21,788.70 = 10,488.92 : x
  2. Step 2: Convert to fraction form
    15,802.52/21,788.70 = 10,488.92/x
  3. Step 3: Cross multiply
    15,802.52x = 21,788.70 × 10,488.92
  4. Step 4: Simplify right side
    15,802.52x = 228,539,931.20
  5. Step 5: Solve for x
    x = 228,539,931.20/15,802.52
  6. Step 6: Final answer
    x = 14,462.25

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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.