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Finding the Fourth Proportional to 611,415.60, 917,123.40 and 190,690.80

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Solution

The fourth proportional to 611,415.60, 917,123.40 and 190,690.80 is: 286,036.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,415.60 : 917,123.40 = 190,690.80 : x
  2. Step 2: Convert to fraction form
    611,415.60/917,123.40 = 190,690.80/x
  3. Step 3: Cross multiply
    611,415.60x = 917,123.40 × 190,690.80
  4. Step 4: Simplify right side
    611,415.60x = 174,886,994,844.72
  5. Step 5: Solve for x
    x = 174,886,994,844.72/611,415.60
  6. Step 6: Final answer
    x = 286,036.20

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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.