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Finding the Fourth Proportional to 93,312,575.80, 139,968,863.70 and 54,954,345.40

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Solution

The fourth proportional to 93,312,575.80, 139,968,863.70 and 54,954,345.40 is: 82,431,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,575.80 : 139,968,863.70 = 54,954,345.40 : x
  2. Step 2: Convert to fraction form
    93,312,575.80/139,968,863.70 = 54,954,345.40/x
  3. Step 3: Cross multiply
    93,312,575.80x = 139,968,863.70 × 54,954,345.40
  4. Step 4: Simplify right side
    93,312,575.80x = 7,691,897,281,015,321
  5. Step 5: Solve for x
    x = 7,691,897,281,015,321/93,312,575.80
  6. Step 6: Final answer
    x = 82,431,518.10

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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.