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Finding the Fourth Proportional to 657,881.18, 907,883.44 and 385,953.74

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Solution

The fourth proportional to 657,881.18, 907,883.44 and 385,953.74 is: 532,620.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,881.18 : 907,883.44 = 385,953.74 : x
  2. Step 2: Convert to fraction form
    657,881.18/907,883.44 = 385,953.74/x
  3. Step 3: Cross multiply
    657,881.18x = 907,883.44 × 385,953.74
  4. Step 4: Simplify right side
    657,881.18x = 350,401,009,152.07
  5. Step 5: Solve for x
    x = 350,401,009,152.07/657,881.18
  6. Step 6: Final answer
    x = 532,620.51

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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.