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Finding the Fourth Proportional to 85,587, 128,349.02 and 29,411.16

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Solution

The fourth proportional to 85,587, 128,349.02 and 29,411.16 is: 44,105.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,587 : 128,349.02 = 29,411.16 : x
  2. Step 2: Convert to fraction form
    85,587/128,349.02 = 29,411.16/x
  3. Step 3: Cross multiply
    85,587x = 128,349.02 × 29,411.16
  4. Step 4: Simplify right side
    85,587x = 3,774,893,416.01
  5. Step 5: Solve for x
    x = 3,774,893,416.01/85,587
  6. Step 6: Final answer
    x = 44,105.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.