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Finding the Fourth Proportional to 211,771,805.30, 317,657,707.95 and 211,771,805.30

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Solution

The fourth proportional to 211,771,805.30, 317,657,707.95 and 211,771,805.30 is: 317,657,707.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,771,805.30 : 317,657,707.95 = 211,771,805.30 : x
  2. Step 2: Convert to fraction form
    211,771,805.30/317,657,707.95 = 211,771,805.30/x
  3. Step 3: Cross multiply
    211,771,805.30x = 317,657,707.95 × 211,771,805.30
  4. Step 4: Simplify right side
    211,771,805.30x = 67,270,946,280,031,664
  5. Step 5: Solve for x
    x = 67,270,946,280,031,664/211,771,805.30
  6. Step 6: Final answer
    x = 317,657,707.95

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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.