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Finding the Fourth Proportional to 885,813.12, 1,326,722.04 and 411,500.34

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Solution

The fourth proportional to 885,813.12, 1,326,722.04 and 411,500.34 is: 616,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,813.12 : 1,326,722.04 = 411,500.34 : x
  2. Step 2: Convert to fraction form
    885,813.12/1,326,722.04 = 411,500.34/x
  3. Step 3: Cross multiply
    885,813.12x = 1,326,722.04 × 411,500.34
  4. Step 4: Simplify right side
    885,813.12x = 545,946,570,545.49
  5. Step 5: Solve for x
    x = 545,946,570,545.49/885,813.12
  6. Step 6: Final answer
    x = 616,322.52

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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.