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Finding the Fourth Proportional to 98,590.92, 136,055.47 and 56,153.40

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Solution

The fourth proportional to 98,590.92, 136,055.47 and 56,153.40 is: 77,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,590.92 : 136,055.47 = 56,153.40 : x
  2. Step 2: Convert to fraction form
    98,590.92/136,055.47 = 56,153.40/x
  3. Step 3: Cross multiply
    98,590.92x = 136,055.47 × 56,153.40
  4. Step 4: Simplify right side
    98,590.92x = 7,639,977,607.04
  5. Step 5: Solve for x
    x = 7,639,977,607.04/98,590.92
  6. Step 6: Final answer
    x = 77,491.69

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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.