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Finding the Fourth Proportional to 84,771,206.10, 127,156,809.15 and 84,771,206.10

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Solution

The fourth proportional to 84,771,206.10, 127,156,809.15 and 84,771,206.10 is: 127,156,809.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,771,206.10 : 127,156,809.15 = 84,771,206.10 : x
  2. Step 2: Convert to fraction form
    84,771,206.10/127,156,809.15 = 84,771,206.10/x
  3. Step 3: Cross multiply
    84,771,206.10x = 127,156,809.15 × 84,771,206.10
  4. Step 4: Simplify right side
    84,771,206.10x = 10,779,236,075,473,016
  5. Step 5: Solve for x
    x = 10,779,236,075,473,016/84,771,206.10
  6. Step 6: Final answer
    x = 127,156,809.15

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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.