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Finding the Fourth Proportional to 911,575.85, 1,258,044.87 and 503,712.63

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Solution

The fourth proportional to 911,575.85, 1,258,044.87 and 503,712.63 is: 695,162.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,575.85 : 1,258,044.87 = 503,712.63 : x
  2. Step 2: Convert to fraction form
    911,575.85/1,258,044.87 = 503,712.63/x
  3. Step 3: Cross multiply
    911,575.85x = 1,258,044.87 × 503,712.63
  4. Step 4: Simplify right side
    911,575.85x = 633,693,090,125.71
  5. Step 5: Solve for x
    x = 633,693,090,125.71/911,575.85
  6. Step 6: Final answer
    x = 695,162.22

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1.5x scale

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.