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Finding the Fourth Proportional to 656,886.66, 906,808.76 and 384,916.82

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Solution

The fourth proportional to 656,886.66, 906,808.76 and 384,916.82 is: 531,364.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,886.66 : 906,808.76 = 384,916.82 : x
  2. Step 2: Convert to fraction form
    656,886.66/906,808.76 = 384,916.82/x
  3. Step 3: Cross multiply
    656,886.66x = 906,808.76 × 384,916.82
  4. Step 4: Simplify right side
    656,886.66x = 349,045,937,788.72
  5. Step 5: Solve for x
    x = 349,045,937,788.72/656,886.66
  6. Step 6: Final answer
    x = 531,364.02

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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.