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Finding the Fourth Proportional to 706,838.40, 1,058,702.40 and 613,526.40

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Solution

The fourth proportional to 706,838.40, 1,058,702.40 and 613,526.40 is: 918,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,838.40 : 1,058,702.40 = 613,526.40 : x
  2. Step 2: Convert to fraction form
    706,838.40/1,058,702.40 = 613,526.40/x
  3. Step 3: Cross multiply
    706,838.40x = 1,058,702.40 × 613,526.40
  4. Step 4: Simplify right side
    706,838.40x = 649,541,872,143.36
  5. Step 5: Solve for x
    x = 649,541,872,143.36/706,838.40
  6. Step 6: Final answer
    x = 918,939.71

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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.