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Finding the Fourth Proportional to 127,620.61, 176,109.59 and 70,248.77

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Solution

The fourth proportional to 127,620.61, 176,109.59 and 70,248.77 is: 96,939.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,620.61 : 176,109.59 = 70,248.77 : x
  2. Step 2: Convert to fraction form
    127,620.61/176,109.59 = 70,248.77/x
  3. Step 3: Cross multiply
    127,620.61x = 176,109.59 × 70,248.77
  4. Step 4: Simplify right side
    127,620.61x = 12,371,482,038.19
  5. Step 5: Solve for x
    x = 12,371,482,038.19/127,620.61
  6. Step 6: Final answer
    x = 96,939.53

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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.