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Finding the Fourth Proportional to 21,985,703.40, 32,978,555.10 and 16,316,999.40

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Solution

The fourth proportional to 21,985,703.40, 32,978,555.10 and 16,316,999.40 is: 24,475,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985,703.40 : 32,978,555.10 = 16,316,999.40 : x
  2. Step 2: Convert to fraction form
    21,985,703.40/32,978,555.10 = 16,316,999.40/x
  3. Step 3: Cross multiply
    21,985,703.40x = 32,978,555.10 × 16,316,999.40
  4. Step 4: Simplify right side
    21,985,703.40x = 538,111,063,779,567
  5. Step 5: Solve for x
    x = 538,111,063,779,567/21,985,703.40
  6. Step 6: Final answer
    x = 24,475,499.10

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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.