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Finding the Fourth Proportional to 556,554.39, 768,045.30 and 314,831.88

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Solution

The fourth proportional to 556,554.39, 768,045.30 and 314,831.88 is: 434,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,554.39 : 768,045.30 = 314,831.88 : x
  2. Step 2: Convert to fraction form
    556,554.39/768,045.30 = 314,831.88/x
  3. Step 3: Cross multiply
    556,554.39x = 768,045.30 × 314,831.88
  4. Step 4: Simplify right side
    556,554.39x = 241,805,145,724.16
  5. Step 5: Solve for x
    x = 241,805,145,724.16/556,554.39
  6. Step 6: Final answer
    x = 434,468.13

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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.