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Finding the Fourth Proportional to 976,679,730.80, 1,465,019,596.20 and 907,804,977.20

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Solution

The fourth proportional to 976,679,730.80, 1,465,019,596.20 and 907,804,977.20 is: 1,361,707,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,679,730.80 : 1,465,019,596.20 = 907,804,977.20 : x
  2. Step 2: Convert to fraction form
    976,679,730.80/1,465,019,596.20 = 907,804,977.20/x
  3. Step 3: Cross multiply
    976,679,730.80x = 1,465,019,596.20 × 907,804,977.20
  4. Step 4: Simplify right side
    976,679,730.80x = 1,329,952,081,125,894,400
  5. Step 5: Solve for x
    x = 1,329,952,081,125,894,400/976,679,730.80
  6. Step 6: Final answer
    x = 1,361,707,465.80

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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.