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Finding the Fourth Proportional to 7,803,225.60, 10,931,980.80 and 7,803,225.60

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Solution

The fourth proportional to 7,803,225.60, 10,931,980.80 and 7,803,225.60 is: 10,931,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803,225.60 : 10,931,980.80 = 7,803,225.60 : x
  2. Step 2: Convert to fraction form
    7,803,225.60/10,931,980.80 = 7,803,225.60/x
  3. Step 3: Cross multiply
    7,803,225.60x = 10,931,980.80 × 7,803,225.60
  4. Step 4: Simplify right side
    7,803,225.60x = 85,304,712,437,268.48
  5. Step 5: Solve for x
    x = 85,304,712,437,268.48/7,803,225.60
  6. Step 6: Final answer
    x = 10,931,980.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.