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Finding the Fourth Proportional to 292,066.60, 435,987.20 and 256,637.20

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Solution

The fourth proportional to 292,066.60, 435,987.20 and 256,637.20 is: 383,099.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,066.60 : 435,987.20 = 256,637.20 : x
  2. Step 2: Convert to fraction form
    292,066.60/435,987.20 = 256,637.20/x
  3. Step 3: Cross multiply
    292,066.60x = 435,987.20 × 256,637.20
  4. Step 4: Simplify right side
    292,066.60x = 111,890,534,243.84
  5. Step 5: Solve for x
    x = 111,890,534,243.84/292,066.60
  6. Step 6: Final answer
    x = 383,099.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.