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Finding the Fourth Proportional to 99,245,416.20, 139,087,071.75 and 99,245,416.20

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Solution

The fourth proportional to 99,245,416.20, 139,087,071.75 and 99,245,416.20 is: 139,087,071.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,245,416.20 : 139,087,071.75 = 99,245,416.20 : x
  2. Step 2: Convert to fraction form
    99,245,416.20/139,087,071.75 = 99,245,416.20/x
  3. Step 3: Cross multiply
    99,245,416.20x = 139,087,071.75 × 99,245,416.20
  4. Step 4: Simplify right side
    99,245,416.20x = 13,803,754,323,868,012
  5. Step 5: Solve for x
    x = 13,803,754,323,868,012/99,245,416.20
  6. Step 6: Final answer
    x = 139,087,071.75

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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.