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Finding the Fourth Proportional to 556,238.80, 767,605.08 and 314,521.36

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Solution

The fourth proportional to 556,238.80, 767,605.08 and 314,521.36 is: 434,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,238.80 : 767,605.08 = 314,521.36 : x
  2. Step 2: Convert to fraction form
    556,238.80/767,605.08 = 314,521.36/x
  3. Step 3: Cross multiply
    556,238.80x = 767,605.08 × 314,521.36
  4. Step 4: Simplify right side
    556,238.80x = 241,428,193,704.51
  5. Step 5: Solve for x
    x = 241,428,193,704.51/556,238.80
  6. Step 6: Final answer
    x = 434,036.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.