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Finding the Fourth Proportional to 9,778,879.60, 14,668,319.40 and 8,938,380.40

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Solution

The fourth proportional to 9,778,879.60, 14,668,319.40 and 8,938,380.40 is: 13,407,570.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,778,879.60 : 14,668,319.40 = 8,938,380.40 : x
  2. Step 2: Convert to fraction form
    9,778,879.60/14,668,319.40 = 8,938,380.40/x
  3. Step 3: Cross multiply
    9,778,879.60x = 14,668,319.40 × 8,938,380.40
  4. Step 4: Simplify right side
    9,778,879.60x = 131,111,018,625,899.77
  5. Step 5: Solve for x
    x = 131,111,018,625,899.77/9,778,879.60
  6. Step 6: Final answer
    x = 13,407,570.60

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Similar ratio
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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.