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Finding the Fourth Proportional to 99,058,506.90, 138,968,887.80 and 99,058,506.90

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Solution

The fourth proportional to 99,058,506.90, 138,968,887.80 and 99,058,506.90 is: 138,968,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,058,506.90 : 138,968,887.80 = 99,058,506.90 : x
  2. Step 2: Convert to fraction form
    99,058,506.90/138,968,887.80 = 99,058,506.90/x
  3. Step 3: Cross multiply
    99,058,506.90x = 138,968,887.80 × 99,058,506.90
  4. Step 4: Simplify right side
    99,058,506.90x = 13,766,050,531,021,628
  5. Step 5: Solve for x
    x = 13,766,050,531,021,628/99,058,506.90
  6. Step 6: Final answer
    x = 138,968,887.80

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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.