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Finding the Fourth Proportional to 503,897.78, 695,378.91 and 277,543.28

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Solution

The fourth proportional to 503,897.78, 695,378.91 and 277,543.28 is: 383,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,897.78 : 695,378.91 = 277,543.28 : x
  2. Step 2: Convert to fraction form
    503,897.78/695,378.91 = 277,543.28/x
  3. Step 3: Cross multiply
    503,897.78x = 695,378.91 × 277,543.28
  4. Step 4: Simplify right side
    503,897.78x = 192,997,746,303.46
  5. Step 5: Solve for x
    x = 192,997,746,303.46/503,897.78
  6. Step 6: Final answer
    x = 383,009.72

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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.