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Finding the Fourth Proportional to 885,990,699.92, 1,326,368,890.20 and 654,422,111.12

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Solution

The fourth proportional to 885,990,699.92, 1,326,368,890.20 and 654,422,111.12 is: 979,700,045.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,990,699.92 : 1,326,368,890.20 = 654,422,111.12 : x
  2. Step 2: Convert to fraction form
    885,990,699.92/1,326,368,890.20 = 654,422,111.12/x
  3. Step 3: Cross multiply
    885,990,699.92x = 1,326,368,890.20 × 654,422,111.12
  4. Step 4: Simplify right side
    885,990,699.92x = 868,005,129,248,575,488
  5. Step 5: Solve for x
    x = 868,005,129,248,575,488/885,990,699.92
  6. Step 6: Final answer
    x = 979,700,045.75

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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.