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Finding the Fourth Proportional to 541,987.60, 812,981.40 and 511,574.80

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Solution

The fourth proportional to 541,987.60, 812,981.40 and 511,574.80 is: 767,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,987.60 : 812,981.40 = 511,574.80 : x
  2. Step 2: Convert to fraction form
    541,987.60/812,981.40 = 511,574.80/x
  3. Step 3: Cross multiply
    541,987.60x = 812,981.40 × 511,574.80
  4. Step 4: Simplify right side
    541,987.60x = 415,900,797,108.72
  5. Step 5: Solve for x
    x = 415,900,797,108.72/541,987.60
  6. Step 6: Final answer
    x = 767,362.20

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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.