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Finding the Fourth Proportional to 191,345.60, 286,862.88 and 66,774.08

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Solution

The fourth proportional to 191,345.60, 286,862.88 and 66,774.08 is: 100,106.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,345.60 : 286,862.88 = 66,774.08 : x
  2. Step 2: Convert to fraction form
    191,345.60/286,862.88 = 66,774.08/x
  3. Step 3: Cross multiply
    191,345.60x = 286,862.88 × 66,774.08
  4. Step 4: Simplify right side
    191,345.60x = 19,155,004,898.15
  5. Step 5: Solve for x
    x = 19,155,004,898.15/191,345.60
  6. Step 6: Final answer
    x = 100,106.85

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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.