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Finding the Fourth Proportional to 128,045.00, 176,711.88 and 70,695.36

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Solution

The fourth proportional to 128,045.00, 176,711.88 and 70,695.36 is: 97,564.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,045.00 : 176,711.88 = 70,695.36 : x
  2. Step 2: Convert to fraction form
    128,045.00/176,711.88 = 70,695.36/x
  3. Step 3: Cross multiply
    128,045.00x = 176,711.88 × 70,695.36
  4. Step 4: Simplify right side
    128,045.00x = 12,492,709,343.32
  5. Step 5: Solve for x
    x = 12,492,709,343.32/128,045.00
  6. Step 6: Final answer
    x = 97,564.99

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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.