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Finding the Fourth Proportional to 93,210.55, 139,889.63 and 40,656.94

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Solution

The fourth proportional to 93,210.55, 139,889.63 and 40,656.94 is: 61,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,210.55 : 139,889.63 = 40,656.94 : x
  2. Step 2: Convert to fraction form
    93,210.55/139,889.63 = 40,656.94/x
  3. Step 3: Cross multiply
    93,210.55x = 139,889.63 × 40,656.94
  4. Step 4: Simplify right side
    93,210.55x = 5,687,484,045.45
  5. Step 5: Solve for x
    x = 5,687,484,045.45/93,210.55
  6. Step 6: Final answer
    x = 61,017.60

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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.