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Finding the Fourth Proportional to 93,587.52, 128,931.84 and 65,242.56

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Solution

The fourth proportional to 93,587.52, 128,931.84 and 65,242.56 is: 89,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,587.52 : 128,931.84 = 65,242.56 : x
  2. Step 2: Convert to fraction form
    93,587.52/128,931.84 = 65,242.56/x
  3. Step 3: Cross multiply
    93,587.52x = 128,931.84 × 65,242.56
  4. Step 4: Simplify right side
    93,587.52x = 8,411,843,307.11
  5. Step 5: Solve for x
    x = 8,411,843,307.11/93,587.52
  6. Step 6: Final answer
    x = 89,882.11

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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.