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Finding the Fourth Proportional to 88,210.64, 121,730.64 and 50,484.80

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Solution

The fourth proportional to 88,210.64, 121,730.64 and 50,484.80 is: 69,669.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,210.64 : 121,730.64 = 50,484.80 : x
  2. Step 2: Convert to fraction form
    88,210.64/121,730.64 = 50,484.80/x
  3. Step 3: Cross multiply
    88,210.64x = 121,730.64 × 50,484.80
  4. Step 4: Simplify right side
    88,210.64x = 6,145,547,014.27
  5. Step 5: Solve for x
    x = 6,145,547,014.27/88,210.64
  6. Step 6: Final answer
    x = 69,669.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.