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Finding the Fourth Proportional to 554,720.40, 830,768.40 and 376,261.20

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Solution

The fourth proportional to 554,720.40, 830,768.40 and 376,261.20 is: 563,501.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,720.40 : 830,768.40 = 376,261.20 : x
  2. Step 2: Convert to fraction form
    554,720.40/830,768.40 = 376,261.20/x
  3. Step 3: Cross multiply
    554,720.40x = 830,768.40 × 376,261.20
  4. Step 4: Simplify right side
    554,720.40x = 312,585,915,106.08
  5. Step 5: Solve for x
    x = 312,585,915,106.08/554,720.40
  6. Step 6: Final answer
    x = 563,501.75

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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.