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Finding the Fourth Proportional to 541,657.40, 812,615.70 and 260,943.80

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Solution

The fourth proportional to 541,657.40, 812,615.70 and 260,943.80 is: 391,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,657.40 : 812,615.70 = 260,943.80 : x
  2. Step 2: Convert to fraction form
    541,657.40/812,615.70 = 260,943.80/x
  3. Step 3: Cross multiply
    541,657.40x = 812,615.70 × 260,943.80
  4. Step 4: Simplify right side
    541,657.40x = 212,047,028,697.66
  5. Step 5: Solve for x
    x = 212,047,028,697.66/541,657.40
  6. Step 6: Final answer
    x = 391,478.13

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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.