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Finding the Fourth Proportional to 976,891,805.10, 1,371,276,497.70 and 976,891,805.10

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Solution

The fourth proportional to 976,891,805.10, 1,371,276,497.70 and 976,891,805.10 is: 1,371,276,497.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,891,805.10 : 1,371,276,497.70 = 976,891,805.10 : x
  2. Step 2: Convert to fraction form
    976,891,805.10/1,371,276,497.70 = 976,891,805.10/x
  3. Step 3: Cross multiply
    976,891,805.10x = 1,371,276,497.70 × 976,891,805.10
  4. Step 4: Simplify right side
    976,891,805.10x = 1,339,588,773,129,359,104
  5. Step 5: Solve for x
    x = 1,339,588,773,129,359,104/976,891,805.10
  6. Step 6: Final answer
    x = 1,371,276,497.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.