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Finding the Fourth Proportional to 885,498.80, 1,326,717.30 and 411,211.40

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Solution

The fourth proportional to 885,498.80, 1,326,717.30 and 411,211.40 is: 616,106.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,498.80 : 1,326,717.30 = 411,211.40 : x
  2. Step 2: Convert to fraction form
    885,498.80/1,326,717.30 = 411,211.40/x
  3. Step 3: Cross multiply
    885,498.80x = 1,326,717.30 × 411,211.40
  4. Step 4: Simplify right side
    885,498.80x = 545,561,278,337.22
  5. Step 5: Solve for x
    x = 545,561,278,337.22/885,498.80
  6. Step 6: Final answer
    x = 616,106.17

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1.5x scale

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.