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Finding the Fourth Proportional to 93,426.32, 128,931.04 and 50,987.58

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Solution

The fourth proportional to 93,426.32, 128,931.04 and 50,987.58 is: 70,364.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,426.32 : 128,931.04 = 50,987.58 : x
  2. Step 2: Convert to fraction form
    93,426.32/128,931.04 = 50,987.58/x
  3. Step 3: Cross multiply
    93,426.32x = 128,931.04 × 50,987.58
  4. Step 4: Simplify right side
    93,426.32x = 6,573,881,716.48
  5. Step 5: Solve for x
    x = 6,573,881,716.48/93,426.32
  6. Step 6: Final answer
    x = 70,364.34

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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.