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Finding the Fourth Proportional to 554,903,618.80, 832,103,485.80 and 209,742,530.80

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Solution

The fourth proportional to 554,903,618.80, 832,103,485.80 and 209,742,530.80 is: 314,518,566.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,903,618.80 : 832,103,485.80 = 209,742,530.80 : x
  2. Step 2: Convert to fraction form
    554,903,618.80/832,103,485.80 = 209,742,530.80/x
  3. Step 3: Cross multiply
    554,903,618.80x = 832,103,485.80 × 209,742,530.80
  4. Step 4: Simplify right side
    554,903,618.80x = 174,527,490,999,193,856
  5. Step 5: Solve for x
    x = 174,527,490,999,193,856/554,903,618.80
  6. Step 6: Final answer
    x = 314,518,566.98

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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.