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Finding the Fourth Proportional to 292,691.40, 438,722.12 and 191,451.32

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Solution

The fourth proportional to 292,691.40, 438,722.12 and 191,451.32 is: 286,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,691.40 : 438,722.12 = 191,451.32 : x
  2. Step 2: Convert to fraction form
    292,691.40/438,722.12 = 191,451.32/x
  3. Step 3: Cross multiply
    292,691.40x = 438,722.12 × 191,451.32
  4. Step 4: Simplify right side
    292,691.40x = 83,993,928,987.20
  5. Step 5: Solve for x
    x = 83,993,928,987.20/292,691.40
  6. Step 6: Final answer
    x = 286,970.95

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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.