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Finding the Fourth Proportional to 93,316.86, 139,909.66 and 43,343.90

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Solution

The fourth proportional to 93,316.86, 139,909.66 and 43,343.90 is: 64,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.86 : 139,909.66 = 43,343.90 : x
  2. Step 2: Convert to fraction form
    93,316.86/139,909.66 = 43,343.90/x
  3. Step 3: Cross multiply
    93,316.86x = 139,909.66 × 43,343.90
  4. Step 4: Simplify right side
    93,316.86x = 6,064,230,312.07
  5. Step 5: Solve for x
    x = 6,064,230,312.07/93,316.86
  6. Step 6: Final answer
    x = 64,985.37

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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.