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Finding the Fourth Proportional to 39,113.40, 53,980.74 and 22,124.40

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Solution

The fourth proportional to 39,113.40, 53,980.74 and 22,124.40 is: 30,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,113.40 : 53,980.74 = 22,124.40 : x
  2. Step 2: Convert to fraction form
    39,113.40/53,980.74 = 22,124.40/x
  3. Step 3: Cross multiply
    39,113.40x = 53,980.74 × 22,124.40
  4. Step 4: Simplify right side
    39,113.40x = 1,194,291,484.06
  5. Step 5: Solve for x
    x = 1,194,291,484.06/39,113.40
  6. Step 6: Final answer
    x = 30,534.07

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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.