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Finding the Fourth Proportional to 93,312,093.80, 139,968,140.70 and 64,590,660.20

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Solution

The fourth proportional to 93,312,093.80, 139,968,140.70 and 64,590,660.20 is: 96,885,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,093.80 : 139,968,140.70 = 64,590,660.20 : x
  2. Step 2: Convert to fraction form
    93,312,093.80/139,968,140.70 = 64,590,660.20/x
  3. Step 3: Cross multiply
    93,312,093.80x = 139,968,140.70 × 64,590,660.20
  4. Step 4: Simplify right side
    93,312,093.80x = 9,040,634,614,779,490
  5. Step 5: Solve for x
    x = 9,040,634,614,779,490/93,312,093.80
  6. Step 6: Final answer
    x = 96,885,990.30

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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.