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Finding the Fourth Proportional to 93,056.64, 128,420.16 and 53,312.64

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Solution

The fourth proportional to 93,056.64, 128,420.16 and 53,312.64 is: 73,572.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,056.64 : 128,420.16 = 53,312.64 : x
  2. Step 2: Convert to fraction form
    93,056.64/128,420.16 = 53,312.64/x
  3. Step 3: Cross multiply
    93,056.64x = 128,420.16 × 53,312.64
  4. Step 4: Simplify right side
    93,056.64x = 6,846,417,758.82
  5. Step 5: Solve for x
    x = 6,846,417,758.82/93,056.64
  6. Step 6: Final answer
    x = 73,572.59

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1.5x scale

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.